5/22/13. Today we learned to calculate pH and pOH (p. 4). Then we learned how to write neutralization reactions, p. 10, and how to use them in titration calculations, p. 11. HW: p. 15, due Tuesday. Note: sub tomorrow - complete worksheets. Have a great long weekend!
5/21/13. Today we checked HW p. 14, then worked in groups to complete 3 mini-labs to explore acids and bases' conductivity, reactivity and effect on indicators. We completed notes p. 5-9 as we worked (complete for HW).
5/17/13. Today we began our new unit, Acids & Bases. We learned how to define, name, and categorize acids and bases as strong or weak, and to write dissociation equations (p. 1-3). We learned how and why water dissociates (p. 4). HW: p. 14, due Tuesday. Have a great weekend!
5/16/13. Today we sat the end of unit test. HW: complete p. 12 & 13 of Acids & Bases notes packet, due tomorrow.
5/15/13. Today we checked HW p. 25 then completed a review worksheet to prepare for tomorrow's test.
5/13/13.Today we completed the unit by learning what entropy is (p. 17), and connected entropy to enthalpy by predicting the spontaneity of reactions (p. 18). HW: p. 25, due Wednesday.
SCHEDULE: Wednesday - review, Thursday - TEST.
5/9/13. Today we checked HW p. 24, then worked in groups of 3 or 4 to complete a lab using Pasco hardware to generate a heating curve for water. One write-up per person due Monday.
5/7/13. Today we checked HW p. 22, then learned about calorimetry and completed practice problems (p. 13 & 14) which reinforced this week's lab. Then we introduced enthalpy of chemical reactions (p. 15 & 16) and learned how to calculate how much heat is absorbed or released in a reaction. HW: do p. 24, due Thursday.
5/6/13. Today we checked HW p. 23 then practiced solving heating curve problems, p. 11 & 12. Then we took class notes on calorimetery, p. 13. which reinforced what we did in lab last Friday. HW: p. 22, due tomorrow.
5/3/13. Today we checked HW p. 21, then worked in pairs to perform a calorimetry lab to determine the specific heat capacity of a metal. HW: complete lab write up and do p. 23. Have a good weekend!
5/1/13. Today we drew AN IMPORTANT heating curve for water (p. 7) and explained the changes in kinetic and potential energy associated with the heating and plateau regions of the graph. We drew pictures to explain why kinetic and potential energy changes in these regions, and learned the formulas to calculate their energy changes. We discussed specific heat capacity and completed some practice problems (p. 8 & 9). We made calculations from a heating curve involving specific heat capacity and the heats of fusion and vaporization (p. 10). HW: p. 21, due Friday.
4/30/13. Today we saw a cool demo of boiling water associated with changing the external pressure. Then we learned how to interpret phase diagrams (p. 3-5). We also reviewed vocabulary associated with energy and phase changes and specific heat capacity (p. 6). HW: p. 19, due tomorrow.
4/29/13. Today we checked HW p. 24 & 25, then sat the Solutions Quiz part 2. Afterwards we began our new unit, States of Matter and Thermochemistry, by exploring the properties of gases and liquids. No HW today.
4/25/13. Today we checked HW p. 23, then worked individually or in small groups to complete a review worksheet. We also worked individually to replicate Tuesday's lab by preparing a solution from either a solid or by dilution, which was graded for quality and cleanup. HW: p. 24 & 25, due Monday.
4/24/13. Today we completed the unit by writing single and double replacement reactions, p. 15, and applying that to solution stoichiometry, p. 16. HW: p. 23, due tomorrow.
4/23/13. Today we worked in pairs to perform a two-part lab: making solutions from solids and by dilution. Grades were given on the accuracy of the molarity of the solution, and clean up.
SCHEDULE: tomorrow - finish the unit, Thursday - review & graded lab, Monday - QUIZ
4/19/13. Today we learned how to calculate the most common way to express concentration: molarity (p. 12), then learned how to calculate molarity by dilution (p. 13), then individually completed practice problems (p. 14). HW: p. 21 & 22, due Tuesday. Have a great weekend!
4/18/13. Today we graded HW p. 19 and 20, answered some questions from the review worksheet, then sat the Solutions Quiz part 1.
4/17/13. Today we applied what we learned about molality and dissociation equations to calculating changes in freezing- and boiling-points of solutions (p. 11). Then we began a review worksheet to prepare for tomorrow's quiz - finish tonight. HW: p. 20, due tomorrow.
4/15/13. Today we began with a projected Do Now to reinforce our interpretation of solubility curves. Then we learned how to calculate two different units of concentration: molality and percent solution (p. 8), and learned how to write equations for the dissociation of solids in water and calculate an "i" number (p. 9). Then we learned what colligative properties are (p. 10). HW: p. 19 (due Wednesday).
4/12/13. Today, after we checked HW, we watched 2 videos that enabled us to complete notes on p. 7. HW: watch the videos that accompany the worksheet and fill in the blanks, due Monday. Have a great weekend!
4/11/13. Today we saw two cool videos demonstrating solubility (isopropyl alcohol and water) and solvation (dissolving ionic compounds in water - see the slide we projected in class online). We continued working on solubility curves, p. 5. We completed a minilab in pairs to make a supersaturated solution which we then seeded with a crystal to have the salt crystallize out (and reinforced with another video). We learned how the solubility of gases changes with temperature and pressure, p. 6. HW: p. 17 & 18 (due tomorrow).
4/9/13. Today we began our next unit, Water & Solutions. We reviewed the properties of solutes and solvents ("like dissolves like") and introduced hydrogen-bonding solvents (water). We used polarity to predict which solutes would dissolve in which solvents, p. 3. Then we used solubility curves to determine if solutions were saturated, unsaturated or supersaturated, p. 4. HW: complete the vocabulary list and questions on p. 1-2, and do p. 17 & 18 (due Thursday).
4/8/13. Today we checked HW p, 21, then sat the Gases Test, then used any leftover time to introduce the next unit on Water & Solutions.
4/5/13. Today we checked HW p. 20. Then we finished the unit by learning Dalton's Law and partial pressure of gases, p. 13, and collecting gases over water (a review of the labs), p. 14. Then we reviewed all topics in this unit in readiness for MONDAY'S TEST by completing the review section p. 22 & 23. HW: p. 21, due Monday. Have a great weekend! TEST ON MONDAY!!!!
4/3/13. Today we reviewed how to use gas stoichiometry to solve gas equations, p. 10. Then we learned how to use the Ideal Gas Law to find molar mass and density, p.11. Then we introduced the movement of gas particles that follow a Maxwell-Boltzmann distribution and learned Graham's Law that relates particle speed and mass. Finally, we introduced Dalton's Law of partial pressures and learned how to calculate partial pressures from total pressures. HW: p. 20, due Friday.
4/2/13. Today we checked HW on p. 18 and 19, then worked in groups of three to complete practice problems using the Combined Gas Law and the Ideal Gas Law. These will be graded. No HW today.
4/1/13. Welcome back! Today we checked HW on p. 18 and 19, then worked in pairs to complete a lab to calculate the molar volume of a gas using a eudiometer. HW: complete lab write-up, due Wednesday if you did not hand it in already.
3/21/13. Today we reviewed HW on p. 17, then continued learning about the Ideal Gas Equation and how to solve problems using it, p. 9 & 10. HW: p. 18 & 19, due April 1. Have a great spring break!
3/20/13. Today we reviewed HW on p. 15 & 16, then learned the Combined Gas Law (p. 6) and solved practice problems (p. 7 & 8). HW: p. 17, due tomorrow.
3/19/13. Today we performed a lab to collect gaseous products from reactions and test their reactivity by attempting to light them (combustion). In a demo, the setup of the apparatus was demonstrated. Oxygen gas was collected and tested with a glowing splint. Students then performed reactions to separately collect hydrogen and carbon dioxide gas. Lab write-up due tomorrow.
3/15/13. Today we learned the three Gas Laws on p. 5 & 6: Boyle's, Charles' and Gay-Lussac's (remember to convert temperature to Kelvin). We did a hardware/software lab on Boyle's Law and saw a cool demo (balloons in a vacuum) of Boyle's Law, too. HW: p. 15 & 16, due Tuesday. Have a great weekend!
3/14/13. Today we began our new unit on Gases by introducing gases' properties, kinetic theory, pressure, volume, temperature and kinetic energy. We saw a cool demo on the power of atmospheric pressure to support a jar of water with just an index card! I liked very much how many class members contributed to the discussion: understanding and explaining these gas concepts as we went along - well done! No HW today.
3/13/13. Today we sat the Stoichiometry Test. Then, using a textbook and any spare time, we completed a Vocabulary Bank for our next unit, "Gases."
3/11/13. Today we reviewed concepts on percent yield and limiting reactant calculations, then spent time working on any and all questions from the 4 review worksheets. Reminder: test Wednesday.
3/7/13. Today we began with a Do Now that reviewed the calculations performed in this unit's lab and that will be on next week's test. Then we distributed two worksheets for review. Schedule: tomorrow - 2 more worksheets for review with sub, Monday - review with Dr. P., Wednesday - test. Have a great weekend!
3/5/13. Today we reviewed the lab to clarify all concepts and problems. Then we reviewed finding the mass of excess reactant (p. 9 and 10). HW p. 15 & 16, due Thursday.
3/4/13. Today we learned percent yield and percent error (p. 6), limiting and excess reactant (p.7 and 8), and introduced finding the mass of excess reactant (p. 9 and 10). HW p. 15 & 16, due tomorrow.
3/1/13. Today, in pairs, we performed a lab that explored mole and mass relationships. I hope you all enjoyed the practical experience. Take your time to complete the write-up, which is due on Monday. Have a great weekend!
2/27/13. Today we reviewed p. 4 & 5 in detail. Then, in groups of 3, we worked together to solve conversion and stoichiometry problems. I liked very much how most of us got into the spirit of the occasion and enjoyed some pressure and friendly competition - but it is important, if you want to be successful, to participate. HW: p. 14 , due Friday. REMINDER: Friday is lab.
2/26/13. Today we had a short "Show & Tell" to exemplify everyday stoichiometry. Then we reviewed our mole ratio work on p. 2, then progressed to multi-step dimensional analysis using mole ratios when converting between moles and mass/volume/number of particles, p. 3-4. HW: p. 13, due tomorrow. NOTE: Friday we will do a lab.
2/25/13. Welcome back! Today we began with a Do Now that reviewed vital skills and concepts that we will need all year long. If you want to be successful, however you define that, your mastery of the Do Now is a barometer of where you currently stand and how well you will achieve your goals. We discussed the meaning of stoichiometry and watched a video that exemplified this. We saw how a cake recipe needs measurements, units and stoichiometry to be useful. Then we used balanced equations to calculate mole-to-mole ratios to predict the relative amounts of reactants and products in a reaction, p. 1 and 2. HW: bring something to school for a Show & Tell illustrating an everyday application of stoichiometry. Complete p. 1 & 2, and do p. 11 &12 (due tomorrow).
2/14/13. Today we sat the reactions end-of-unit test. Then we introduced the next unit on stoichiometry by reading the introduction to chapter 12 and section 12.1, p. 382-389. Happy Valentine's Day!
2/13/13. Today we worked in pairs to complete six stations for review in preparation for tomorrow's test. The answer keys for all six stations will be posted later today, along with the answer keys to the two practice worksheets. I also strongly recommend attempting last year's test.
2/12/13. Today we performed the four-part Observing Chemical Reactions Lab. It is designed to exemplify and reinforce four of the five types of reactions. Students worked in pairs to perform the reactions, but one write-up per person is required. HW: hand in lab tomorrow if you did not do so today.
2/8/13. Today we practiced predicting reaction products, p. 15. Then we introduced the “advanced topic” in this unit (worth 3 extra points on the end of unit test). Students were given a one-page handout describing three types of decomposition reactions and must study independently to learn the material and answer problems on the handout in order to answer the relevant question on the end of unit test.
I also distributed two practice worksheets that we will review on Tuesday. HW: p. 20, due Tuesday with p. 19.
SCHEDULE: Tu: lab. W: review. Th: test.
Have a great weekend - stay safe in all that snow!
2/7/13. Today we spent a few minutes reviewing the characteristics that identify the five types of reaction (refer to p. 13). Then we practiced what we learned by writing word equations, p.14. HW: p. 19, due Tuesday (and remember, HW p. 18 is due tomorrow).
2/6/13. Today we learned the next two types of reactions (single replacement and double replacement), and practiced identifying and writing balanced equations for them, p. 10. HW: p. 18, due Friday. Refer to the thorough notes p. 11-13 when answering HW. ALSO P. 17 HW IS DUE TOMORROW.
REMINDER: bring to every class the current notes packet, white PT with polyatomics, and the nomenclature notes packet (Ch. 9) so you can refer to it for naming.
1/30/13. Today we completed the long-awaited gold penny lab then spent time answering review-type questions associated with the lab. I wish you all much success and good brains with your midterms, especially chemistry!
1/28/13. Today we worked in pairs to complete seven worksheets on different review topics set up as stations. The answer keys for these will be uploaded on 1/29. Reminder that lab - plus more review - is Wednesday.
1/25/13. Today we completed review worksheets. Bring to Monday's review session questions on topics you need help with or specific single questions that we can discuss as a class or in small groups. Have a great weekend!
1/24/13. Today we reviewed the themes in the Alka-Seltzer lab to help us plan and execute labs in the future. The sample lab will be posted online later today. Then we reviewed homework (p. 6 and 16) on balancing chemical equations. Then we learned three types of reaction (synthesis, decompostion and combustion of a hydrocarbon), and practiced identifying and writing balanced equations for them, p. 8 and 9. Then we took a short quiz on energy changes in a reaction, collision theory and factors affecting reaction rate, and some simple balancing of equations. HW: p. 17, due tomorrow.
1/22/13. Today we continued writing balanced equations from skeleton equations by completing the examples on p. 4 and then practiced in pairs by completing p. 6 and beginning p. 7. Refer to the notes and steps on p. 5 when writing balanced equations. Remember your job is to only adjust coefficients and to leave subscripts alone. HW: do p. 16 (due Thursday).
REMINDERS: SNHS-led review session today after school in S23. Midterm review due Thursday. Quiz Thursday (15 pts - topics are energy changes in a reaction, collision theory and factors affecting reaction rate, and some simple balancing of equations).
1/18/13. Today we learned factors that affect the rate of reaction and discussed videos that illustrated them. Then we revisited the Law of Conservation of Matter and applied it to writing balanced equations from skeleton equations. Remember your job is to only adjust coefficients and to leave subscripts alone. We will continue working on this in class next time. No HW today!! Have a great long weekend!
1/17/13. Today we performed the first of two labs in this unit, which followed on from important points introduced in Tuesday's lesson. We tested how changing temperature, and then surface area, affected the rate of reaction of Alka-Seltzer tablets in water. I liked how you all took the initiative to figure out appropriate procedures for the lab and shared those ideas. Remember that only one variable can change at a time when comparing experiments.One write-up per pair is due Tuesday if you did not hand the write-up in during class.
1/15/13. Today we began our new unit, Chemical Reactions. We learned some new vocabulary, discussed energy diagrams for exo- and endothermic reactions (and we discussed two cool demos), and learned about Collision Theory. We also discused a video on Collision Theory. No HW today!!
1/14/13. Today we sat the Mole Test. We begin the next unit on Reactions tomorrow. Reminder: midterm review is due 1/24.
1/11/13. Today we completed our Hydrate Lab. I hope you enjoyed it and learned something. I liked how we put our heads together and problem-solved: much better than getting all of your answers from the teacher. If you did not hand in the lab today then please do so on Monday. HW: study for Monday's test - see me or email me with any questions. Have a good weekend!
1/9/13. Today we reviewed important topics in this unit (mole conversions, percent composition and empirical & molecular formulas) by working with partners and rotating through stations to complete worksheets. Those three review worksheets are uploaded. REMINDER: the complete notes key and all HW answers is now uploaded. We do lab Friday and test Monday.
1/8/13. Today we learned what molecular and empirical formulas are, and learned how to calculate a molecular formula from an empirical formula and a molar mass, p. 8. Then we learned about hydrates: how to recognize them, calculate percent composition of water in them, and how to determine the formula from the mass of a hydrate and an anhydrate. HW: p. 12, due tomorrow, plus prepare a procedure for the lab.
SCHEDULE: Weds - review, Fri - hydrate lab, Mon - TEST.
1/7/13. Today we reviewed mole conversions (moles to mass, to number of particles, and to volume of a gas) p. 5-7. Then we completed our yummy lab, calculating the percent composition of sugar in bubble gum. I liked very much that we problem-solved in groups to arrive at the correct answers - well done!
1/3/13. Today we reviewed calculating molar mass and percent composition by completing p. 4 of notes, then we used molar masses to calculate mole conversions on p. 5 & 6. HW: p. 11, due Monday with p. 9 & 10.
1/2/13. Happy New Year! Today we began a new unit, The Mole. We learned how to calculate the molar mass of compounds and to use this to calculate the percent composition of elements in compounds, p. 2-4. HW: do p. 9 & 10, due Monday. Also, preread the lab, p. 13 & 14, and outline a procedure for Monday's lab.
12/21/12. Today we took the Bonding Test. Too bad we didn't have the time to finish with a fun lab and a take home souvenir - we'll postpone to the new year.
Wishing you all a wonderful holiday break and Happy New Year.
12/19/12. Today we checked and reviewed HW, reviewed VSEPR strategies and patterns, and worked on review materials to prepare for Friday's test. Study for the test by completing : i) review p. 20-22 ; ii) review worksheet, and iii) last year's test. All answers are online.
12/18/12. Today we learned how to apply the Lewis structures we draw to elucidate the 3D structures of molecules and ions using VSEPR theory (p. 9-12). We learned the effects of repulsion between bonded and nonbonded pairs of electrons on molecular and ionic shapes. We related shapes to internal bond angles, and the polarity, melting-points and solubilities of compounds. Use the summary on p. 13 to help. HW: p. 18 & 19, due tomorrow. SCHEDULE: tomorrow review, Friday TEST.
12/17/12. Today we completed learning how to draw dot diagrams for covalent compounds by completing p. 8, which included "Special Examples" of resonance structures. HW: p. 18, due Wednesday.
12/13/12. Today we learned how to describe covalent polar and nonpolar compounds, and to state the properties and describe the intermolecular forces that exist for each. We then introduced rules for drawing dot diagrams for covalent compounds. HW: p. 16 and 17, due Monday.
12/12/12. Today we began our new unit on Bonding. We explored the bonding and properties of the following types of compounds: ionic, metallic, and network covalent. We saw a demo to illustrate some properties of solubility and conductivity. HW: p. 16 top three rows (will grade when complete).
12/11/12. Today we had a quick review of HW before sitting the test. HW: complete Review #1 on p. 14 and 15 of your new notes packet by using past notes and chapter 7 and 8 of the textbook (due tomorrow).
12/7/12. Today we practiced writing names and formulas for covalent compounds, p. 9 and 10, and then practiced differentiating between ionic and covalent compounds, p. 11 and 12. Then we learnt the rules for naming and writing formulas for acids, p. 13, and practiced by working on p. 14. HW: p. 20 and 21, due Tuesday for a grade (10 points), plus complete the review worksheet for practice (0 points). We will review HW before Tuesday's test (review topics are i) an element's group, block, # valence electrons, ion it forms, compare atomic and ionic radius; ii) mass-mole-# molecules conversions). Also, yesterday's worksheet with answers is uploaded on the Nomenclature webpage. Have a great weekend!
OOPS! FORGOT TO HAND OUT THE REVIEW WORKSHEET FOR PRACTICE THIS WEEKEND. Click here to get it: Review
12/5/12. Today in our Colorful Precipitates lab we saw transition metals demonstrate their characteristic formation of colored compounds. We had practice writing formulas using the criss cross method. Write up due Friday. Schedule: tomorrow worksheet with sub; Friday complete covalent compounds and acids; Tuesday review and TEST.
12/3/12. Today we completed learning all we need to know about writing names and formulas for ionic compounds by completing p. 7 and 8. Then we learnt the rules for writing names and formulas for covalent (molecular) compounds. No HW today. Schedule: lab Wednesday, sub with worksheet Thursday, covalent compounds Friday.
11/30/12. I hope today's lesson with the sub went well and you feel you are able to write and name formulas for ionic compounds. Remember HW: p. 15, 16, 18 and 19 due Monday. Have a good weekend!
11/29/12. Today we reviewed how to write the names and formulas for ternary compounds (contain polyatomics), p. 5 and 6. Then we learned how to write formulas for compounds containing transition and post-transition metals by calculating the charge (oxidation state, hence Roman numeral) from the anion, p. 6. Then we practiced writing names and formulas, p. 7 and 8. HW: p. 15, 16, 18 and 19 due Monday.
*** TOMORROW YOU WILL HAVE A SUB FOR GROUP WORK THAT WILL BE COLLECTED AND GRADED ***
11/27/12. Today we began our new unit, Nomenclature. We previewed the unit by looking at ions and reminding ourselves that metals form cations and nonmetals for anions. Then we practiced writing formulas for cations and anions (including using Roman numerals for transition and post-transition metals), and putting them together to make binary ionic compounds, p. 4 and top of p. 5. HW: p. 17 (due Thursday).
11/26/12. Today we reviewed HW and answered a few questions before taking the very short end of unit test. We started the new unit on Nomenclature. Remember the colored PT activity is due tomorrow.
11/21/12. Today we continued how to calculate molecular mass (REMEMBER TO USE 1 dp FOR ATOMIC MASSES) and to convert metween mass, moles and number of molecules. Then we worked on the Colored Periodic Table Activity - detach p. 13 & 14, complete, and attach a rubric (due Tuesday). I have uploaded the key for all of the notes and p. 9 and 10 HW answers. HW: do p. 11 and 12 (due Monday) and study for Monday's test. Happy Thanksgiving!
11/19/12. Today we completed presenting the properties of groups/regions of elements. A good job by all - these are your notes to study from. Then we learned about forming ions and the octet rule, and discovered that ionic size differs from the size of a parent atom. Then we learned the difference between an atom and a molecule and learned the seven diatomic elements. No HW, but study what you have learned so far ready for next week's test. Also, work on your project - there is a sample advert project uploaded on this unit's webpage.
11/16/12. Today we we researched in groups the properties of six regions/groups of the PT in a jigsaw activity so as to present and teach our findings to the rest of the class. A good job by all - these are your notes to study from. We will complete the presentations from group 3 onwards on Monday. HW: do HW #2 (p.10) - due on Monday with HW #1.
11/15/12. Today we completed discussing trends across a period and down a group. Then we received our project assignments (due 11/26). Then we researched in groups 6 regions/groups of the PT in a jigsaw activity so that we can present and teach our findings to the rest of the class.
11/15/12. Today we began our new unit, The Periodic Table. Our Do Now reviewed reading electron configurations directly from the PT, and reinforced identifying the s, p, d and f blocks; counting valence electrons; and identifying metals, nonmetals and metalloids. We then took notes on the historical development of the PT (Mendeleev and Moseley), parts of the PT, and examined the effects of the nuclear pull experienced by valence electrons. This leads to trends across a period and down a group (p. 4). HW: do HW #1 (p. 9), due Monday.
11/13/12. Today we completed the end of unit test. HW: complete the periodic table electron configuration activity.
11/12/12. Today we worked on this unit's review worksheet and last year's test. HW: study for tomorrow's test.
11/9/12. Today we performed the famous "Flame Test Lab" where we heated solutions of various cations and observed their colorful flames (aka "emission spectra") and used these to identify unknown cations afterwards. Then we observed with rainbow glasses the emission spectra of three pure elements by using a spectrometer, and related this to the energies and wavelengths of the photons emitted. HW: complete lab write-up (due Monday).
11/7/12. Today we completed the academic work in this unit by reviewing the noble gas abbreviation for writing electron configurations (p. 11). We also saw four exceptions to the Aufbau principle, based upon the changes to the relative energies of the s and d sublevels. We then worked in pairs on a review worksheet. HW: continue with the review worksheet and study for Tuesday's test.
11/6/12. Today we continued using the Aufbau principle, Hund's Rule, and the Pauli exclusion principle to represent the arrangement of electrons in atoms in different ways, and saw the correct and incorrect ways to use Hund's Rule and the Pauli exclusion principle. We learned how to abbreviate the electron configuration and orbital notation by using a noble gas shorthand notation. HW: p. 16 (due Friday).
11/5/12. Today we had a quick recap of the important points in this unit so far: the relationships between energy, frequency and wavelength in waves, and the meaning of energy levels, sublevels, orbitals and spin when discussing the arrnagment of electrons. We learned the three rules that govern describing the arrangement of electrons (the Aufbau principle, Hund's Rule, and the Pauli exclusion principle), and represented electron configurations for simple atoms in three different ways (Bohr diagram, oribital filling diagram and electron configuration), as well as learning how to determine the number of valence electrons in an atom. HW p. 15 (due Wednesday), and a reminder that the reading activity p. 12-13 and the optional HW p. 18 is also due Wednesday.
SCHEDULE: Tues 11/6 - continue with electron configurations p. 8-11; Weds 11/7 - review; Fri 11/9 - lab; Mon 11/12 - graded lab practical; Tues 11/13 - TEST.
10/26/12. Today we learned how atoms absorb and emit energy (p. 5) and how this produces an atomic emission spectrum, and began learning about the quantum numbers that describe the arrangement of electrons in an atom (p. 6). HW: do the reading activity p. 12-13 (due Monday).
10/25/12. Today we started our new unit, Electrons in an Atom. We studied the wave properties of light and learned the direct and inverse relationships that exist between energy, frequency, wavelength and speed. Then we learned the features of and how to use a Bunsen burner by performing an activity in pairs involving heating and bending glass tubes. HW: do p. 14 (due Friday). OPTIONAL HW: p. 18 (due Friday).
10/23/12. Today we took the Atomic Structure test. HW: complete the vocabulary word bank for the next unit, which we start Thursday.
10/22/12. Today we worked in pairs and rotated through stations to review for tomorrow's test which will include the following topics: 1) counting p, n and e for elements, isotopes and ions; 2) calculating average atomic mass; 3) mass/mole/# atoms conversions; 4) balancing nuclear reactions; 5) half-life; and 6) calculating percent abundance (optional).
Note that past topics to be reviewed and tested are metric conversions (milli, centi, deci and kilo) and accurate reading of lab equipment (if apparatus reads units then you report tenths; if it reads hundreds then you report tens, etc.). All of today's review questions and answers are uploaded, as well as the complete notes packet key. Pay special attention to knowing all of the scientists' information, including Democritus.
10/19/12. Today we spent about 15 minutes finalizing our PowerPoint presentations for the scientists' project. I was very impressed with the thoroughness of the research and the quality of the presentations - well done! Schedule: Monday - review, Tuesday - TEST. HW: revise for the test - complete notes including HW are online, plus review materials. Also, don't forget your reading assignment HW is due Monday. Have a great weekend!
10/17/12. Today we continued working on balancing nuclear equations. Our Do Now helped us remember and understand the notation we use for alpha, beta, and gamma radiation, and for protons, neutrons and electrons. Then we predicted the mass of an isotope remaining after a specific number of half-lives have passed, and drew graphs for half-life. Then we had about 30 minutes to begin work on our Scientist Presentations which we will do Friday. HW: Do p. 18 of notes (due Friday).
Schedule: Friday: Scientist Presentations, Monday: review, Tuesday: TEST.
10/16/12. Today we had our Elements Quiz. It is clear that many people studied hard for this - well done! Then we introduced nuclear chemistry: types of nuclear reactions (fission and fusion), types of nuclear emissions (alpha, beta and gamma), and learned how to balance nuclear equations. HW: read p. 892-7 of the textbook, and on loose leaf paper answer p. 893 Q 1-3 & p. 897 Q 26-7 (due Monday).
10/15/12. Today we had our third (bottom-third) spot quiz for elements to memorize. Then we introduced the Scientist Presentation project which we will work on in lab this week and present on Friday. Then we worked in groups to solve mole conversion problems on white boards. Then we began work on the midunit worksheet.
HW: p. 17 and midunit worksheet (due Wednesday).
10/11/12. Today we had our second (top-half) spot quiz for elements to memorize (oops! many apologies to give an impossible word search...). Then we took a little time to review issues with counting protons, neutrons and electrons in elements, ions and isotopes. Remember to do the "Extra Practice" on the Welcome page if that helps you. Then we learned how to perform one- and two-step conversions between mass, moles and numbers of atoms for elements (p. 8 & 9 of notes), which also gave us vaulable practice on entering scientific notation numbers into a calculator. HW: p. 16 (due Monday).
10/10/12. Today we had our first (top-half) spot quiz for elements to memorize. We then had a quick review of any issues with HW p. 4, 5 and 14. Then we learned how to calculate average atomic mass from the relative abundance and mass of isotopes of an element (p.6 of notes). Then we learned how to convert between scientific and standard notation, and how to enter numbers in scientific notation into a calculator (p.7 of notes). HW: p. 15 (due Friday).
10/9/12. Today we reviewed the XY and density labs. Then we began our new unit on Atomic Structure. We described the subatomic particles and defined Atomic Number and Mass Number. We learned about elements, isotopes and ions. Remember to learn the top third of your elements list and to bring to class tomorrow the longest word you can make from those symbols (which can be used only once). Summative quiz on the whole list on Lesson #5 (10/16).
HW: Complete p. 4, 5, 14 (due Thursday). Study elements list.
10/4/12. Today we reminded ourselves of important concepts on this unit's test: 4 metric conversions to memorize, Kelvin to Celsius conversions, and density. Then we reviewed HW p. 11, 13-15. Then we had some time to work on this unit's worksheet and last year's Measurement Test. Answer keys to all the notes in this unit (including all HW), the worksheet and last year's Measurement Test can be found on the Measurement page. HW: study for tomorrow's test..... good brains!
10/3/12. Today we reviewed HW on p. 11 and 13. Then in our lab we calculated the density of a solid and a liquid by using a balance to measure mass and a graduated cylinder to measure volume. We also revisited the concepts of precision and accuracy, calculated percent error, and thought about physical and intensive properties.
HW: study for Friday's test.
10/1/12. Today we completed the academic part of our Measurements unit by learning how to calculate density (and how to calculate mass or volume from density). We used dimensional analysis, but use whichever technique you find most comfortable.
HW: do p. 15 (due Thursday).
Schedule: Weds density lab (now online); Thurs worksheet and HW review; Fri test.
9/28/12. Today we reviewed one-step and two-step dimensional analysis, p. 6 & 7. Then we learned metric and mixed metric conversions, p. 8 & 9. HW: do p. 11, 13 & 14 (due Monday). Have a good weekend.
9/27/12. Today we completed the XY lab. I was very impressed by the way all groups planned, worked, cooperated, performed the experiments and cleaned up - well done. The lab write-up - group work (including a graph) to be emailed to me, individual conclusions as a hard copy - is due next Monday, 10/1.
** typo on p. 9 of notes: Q. 4 should read "16 cups in a gallon" **
9/24/12. Today we reviewed the Classification of Matter Quiz. Then we reviewed the "Reading Lab Equipment" worksheet on p. 3 of our notes. We then took notes and discussed the various steps of the scientific method (p. 12), and learned how to calculate percent error between measured and actual values. We then learned about dimensional analysis and looked at one- and two-step problems.
HW: 1) complete p. 6-7 for practice; 2) make sure your groups are prepared for Thursday's XY lab part 2.
9/21/12. Today we began our next unit on Measurement: we described measurements as quantitative and qualitative, described accuracy and precision, measurements made commonly in the lab, and the degrees of accuracy involved in reading lab equipment. We worked in groups to explore measuring mass, length and liquid volumes, and so learnt how to read a balance, ruler, graduated cylinder and a beaker to an appropriate level of accuracy.
HW: 1) Read p. 74-79, 2) Complete p. 3 worksheet, 3) be ready for Thursday's lab part 2.
9/20/12. Today we began our two-part XY Lab. All students got off to a terrific start reacting X, Y and aluminum foil and made good progress towards planning for Part 2 on our next lab day (9/27). Make sure your saved file contains your group number and "Period 6." Make sure all group members names are on your write-up, and answer all parts thoroughly and thoughtfully for maximum points. HW: come prepared for next week's lab.
9/14/12. Today we checked answers to the worksheet (yesterday's HW); we saw three cool demos on separation of mixtures and compounds and took notes; then we took the end of unit quiz. Enjoy your long weekend!
9/12/12. Today we performed a lab, the Separation of Mixtures. In groups, we performed one of three separation techniques, which we will learn about in class in our next lesson. Once completed, as "experts" we then presented to the rest of the class so as we could learn about the two techniques we did not perform. Overall, I was VERY pleased with the quality of the presentations.
HW: Begin worksheet. Bring/e-mail me questions from the worksheet and/or last year's test.
Also, when your lab is returned make sure you know the names and functions of the eight pieces of lab equipment on page 1 for the test.
Reminder: HW check p. 9 & 10 tomorrow.
9/10/12. Today we completed our notes on physical and chemical properties and change, and summarized those findings in a table, along with a summary of Classification of Matter. HW: p. 9 & 10 (due Thursday).
Schedule: Lab - Wednesday; Quiz - Friday.
Review: To help you review for this (and all future) unit tests, a version of last year's unit test is posted on this unit's webpage. It bears similarity to this year's test. Work through it and come to me with questions on Thursday's class.
9/7/12. Today we defined element, compound and mixture. Remember: all pure substances are either elements or compounds and therefore only contain ONE type of particle. Mixtures always contain MORE THAN ONE type of particle. We also examined the properties of solids, liquids and gases. We learned about physical and chemical properties. HW: p. 5 of notes (due Monday) and read p. 34-39 of textbook.
9/6/12. Today we completed all of the admin that is necessary on the first day of a new school year. But to the chemistry: our first topic in the Matter and Energy unit is "Classification of Matter." By way of introduction, you were asked to talk to a friend and try to define element, compound and mixture. That's where we'll pick up tomorrow. Reminder: please bring in your signed Lab Agreement tomorrow.
Last Modified Yesterday at 11:28 AM