Chemistry 2016-2017

SECOND SEMESTER

Week 16, May 1-5, 2017

Monday, May 1, 2017.  Titration of dilute HCl with NaOH and phenothalein indicator solution.

Tuesday, May 2, 2017.  Titration problems homework due.  Write up titration lab.  Skype with Caltech lab about samples for community water quality study.

Wednesday, May 3, 2017.  Galvanic cells - Intro to electrochemistry.

Thursday, May 4, 2017.  Notes on pages 614-615.  Building a lemon battery with diagram.  Homework:  Read pages 604-605 and coming to class knowing the difference between oxidation and reduction.

Friday, May 5, 2017.  Survey for water quality project.

Week 15, April 24-28, 2017.

Monday, April 24, 2017.  Mini-titrations of metal-rich solutions from previous acid+metal demo with pH paper.

Tuesday, April 25, 2017.  Write a business letter to accompany samples in the mail.

Wednesday, April 26, 2017.  Reading jig-saw pages 548-549.  Neutralization demo with HCl and NaOH compared to salt water.

Thursday, April 27, 2017.  Titrations.  Homework:  Problems on Titrations handout due on Monday.  Procedure for Titration started in class and due on Monday.

Friday, April 28, 2017. 

Week 14, April 17-21, 2017

Monday, April 17, 2017.  Classwork:  reading sample procedures for water.  Homework:  Read pages 539-541 and answer questions #1-3.  Also, write balanced chemical equations for #2 and #3.  Remember, these are strong acids and bases, which means they dissociate completely in water.

Tuesday, April 18, 2017.  Classwork:  Work on procedure and handout for field trip.  Homework:  problems #4-5 on page 541.

Wednesday, April 19, 2017.  Classwork:  Finish up handouts for field trip.  Read:  Measuring pH in class.  Go over homework problems. 

Thursday, April 20, 2017.  Sample Collecting Field Trip  Homework:  Read pages 542-544 and answer questions #1-3.  Remember, strong acids dissociate completely.

Friday, April 21, 2017.  Mail samples.

Week 13, April 10-14, 2017

Monday, April 10.  Classwork:  Prepare for Community Water Quality Study.  Homework:  Read page 532.  Then draw the equilibrium all four reactions shown as equilibrium reactions with arrows reflecting the direction that the reaction tends to go.  Note whether there will tend to be more products or more reactants in each reaction shown.

Tuesday, April 11.  Properties of Acids.  Demonstration of reaction of strong acid and weak acid with different metals.  Chemical equations with acids.

Wednesday, April 12 Classwork:  Prepare for Community Water Quality Study.  Homework:  Read page 533.  Then write out equations to show the dissociation in water of 5 strong acids, 5 weak acids, 5 strong bases, and 5 weak bases utilizing Tables 1 and 2 on pages 532-533.

Thursday, April 13.  Coleville Activity

Friday, April 14.  Phone calls for water quality study.  TURN IN NOTEBOOKS.

Week 12, March 27-31, 2017

Monday, March 27.  The effect of surface area on reaction rate.  Homework:  Starting a fire with steel wool and a D-cell battery.

Tuesday, March 28.  Demo of starting a fire with a d-cell and steel wool.  Quick-lab on page 589 with funnels of different size.  Analysis of energy diagram on page 591.  Homework:  Read pages 590-592 on energy diagrams of reaction rate and answer critical thinking questions #9 and #11 on page 595.  Pay particular attention to the vocabulary word "activation energy". 

Wednesday, March 29.  Start experiment with pepsin and chicken.  Continue to analyze diagram on page 591, illustrating the difference between endothermic and exothermic reactions.  Representation of a catalyst on the diagram accompanied by a repeat of the demo with hydrogen peroxide and manganese dioxide.  Observations on demo with pepsin and chicken.

Thursday, March 30.  Continue observations on pepsin with chicken.  Animation of proteastome protein and discussion of biological catalysts.  Internet research on biological catalysts for one-paragraph summary explaining how one works.

Friday, March 31.  Mini-assessment.  Turn in notebooks.

Week 11, March 20-24, 2017

Monday, March 20.  Balancing chemical reactions and reaction rate relationship with concentrations and coefficients of reactants and products.  Problem in class:  #2 on page 581.  Homework:  Balance the chemical reaction of hydrogen peroxide decomposing to water and oxygen H2O2(aq) ----> H20(l) + O2(g).  Then draw a graph showing the relative increase and decrease of the concentrations of products and reactants, respectively, as the reaction progresses

Tuesday, March 21.  Study Hall

Wednesday, March 22.  Experiments on reaction rates.  Lab demos with video.  1)  Antacid tablets in different concentrations of HCl;  2)  Burning Fe (steel wool) in pure oxygen vs. air;  3) catalyzed decomposition of H2O2(aq) (see reaction from Monday's homework).  Video of flashover in a burning building.  Homework tonight:  Read pages 582-584 and write a list of factors that affect reaction rate in your notebook.

Thursday, March 23.  Affect of temperature on reaction rate - Experiment pre-lab.


Week 10, March 13-17, 2017

Monday, March 13.  Chem Reports due at the beginning of class.  Chem Report Demo #1.

Tuesday, March 14.  Chem Report Demo #2.

Wednesday, March 15.  Chem Report Demo #3.

Thursday, March 16.  Practical applications of limiting reagents and stoichiometry. 
Homework:  pg. 269, #1-4 and pg. 273, #1-3.

Friday, March 17.  TURN IN NOTEBOOKS.

Week 9, March 6-10, 2017

Monday - Wednesday, March 6-8.  Work on Chem Reports in class.

Thursday - Friday, March 9-10.  College Trip

Week 8, February 27-March 3, 2017

Monday and Tuesday, February 27-28.  Review Assessment and Notes from early February on equilibrium and reversible reactions.  Demo:  Burning sulfur and irreversible reactions.  Homework:  Look up polymorphs of sulfur on the internet and make some guesses about what you observed in the demo.    Also, pages 870 problems #1-2 and #8-9.

Wednesday, March 1.  Notes about equilibrium constants and collision theory.  Homework:  Question #4.

Thursday, March 2.  Notes about enthalpy effects on equilibrium and solubility products.  Nice website on solubility products:  http://www.saltlakemetals.com/SolubilityProducts.htm   Homework:  Problems #16-18 on page 872... for each of these, use the rules from the website to determine if the compounds in question are soluble, slightly soluble, or insoluble.

Friday, March 3.  Start Chem Reports in class.  Homework:  Chemistry Report Due Monday, March 13, 2017.  Chem.Report.Q3.docx



Week 7, February 13-17, 2017

Monday, February 13.  Practice Assessment

ATTENTION CHEMISTRY STUDENTS!  DUE TO A CHANGE IN SCHOOL SCHEDULE I WILL NOT POST THE ANSWERS TO THE PRACTICE ASSESSMENT TONIGHT.  Instead, we will go over them tomorrow in class.  Bring your completed practice assessments with you.

Tuesday, February 14.  Go over practice assessment.

Wednesday, February 15.  Assessment.  TURN IN NOTEBOOKS.

Thursday, February 16.  Mock Trial

Friday, Febraury 17. 


Week 6, February 6 - 10, 2017

Monday, February 6.  Basketball Game

Tuesday, February 7.  Basketball Game SNOW DAY.

Wednesday, February 8.  Demo from page 497.  Calculations with equilibrium constants.  Notes on what is going on at the atomic scale with solutions in equilibrium.  Homework:  Reading on bottom half of page 505.  Also, do practice problems #1 and #2 on page 504 and problem #2 on page 506.

Thursday, February 9.  SNOW DAY

Friday, February 10.  REVIEW FOR ASSESSMENT.  See attached Review Sheet: 
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Chemistry.Exam.Review.Sem2.Exam1.docx (

Stay tuned for homework assignment for this weekend.

Week 5, January 30 - February 3, 2017

Monday, January 30.  Solubility of Gases.  Homework:  Review Henry's Law together as a class.  TURN IN NOTEBOOKS.

Tuesday, January 31 and Wednesday, February 1:  Worksheet.

Thursday, February 2.  Calculating ppm and molarity.

Friday, February 3.  Homework due Tuesday:  page 467 problems #5-9 and try #11.  You will need to use molar mass (molecular weight) to complete problems 8 and 9.

Week 4, January 23-27, 2017

Monday, January 23.  SNOW DAY

Tuesday, January 24.  Review stoichiometry problems in class.  Homework:  Correct problems in your notebook and READ PAGES 454-455.  Also for homework, write in your notebook the difference between a solution and a suspension as well as your own definition of solute and solvent.

Wednesday, January 25. Working with models and miscibility of liquids lab for investigation of solubility.  Homework:  Read pages 468-470 and 484, and write comments in your notebook about how what you read relates to the demonstrations in class.  Make sure you mention how to tell if substances are miscible or immiscible.  Also include an explanation of how "like dissolves like" relates to polar vs. non-polar substances.  Give examples of each.

Thursday, January 26.  Experiments with solubility dependence upon different variables.  Homework:  Read pages 471-473, and write comments in your notebook how temperature dependence on solubility relates to the demonstrations in class.  Make sure you have a diagram from class about what happens thermodynamically (enthalpy vs. entropy) when individual atoms leave the surface of the crystal lattice to dissolve.

Friday, January 27.  Electrical conductivity of solutions.  Homework:  Read pages 478-480, and write comments in your notebook about how what you read relates to the demonstration in class.

Week 3, January 17-20, 2017
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Tuesday, January 17.  Review density problems and partial pressure problems in class.  TURN IN NOTEBOOKS TOMORROW MORNING BEFORE YOU LEAVE.  Homework for tomorrow:  density problems from worksheet, 2) Look over pages 440-442, 3) Work practice problem #1 on page 442 on a separate sheet of paper to turn in.

Wednesday, January 18, 2017.  Game

Thursday, January 19, 2017.  Review density problems and using the calculator.  Work molecular speed problems in class.  Homework: Practice problems #2-4 on page 438.

Friday, January 20, 2017.  Work stoichiometry problems in class.  Homework:  Page 869, problems 92, 96, 97 and correct problems in notebook.  NOTEBOOKS DUE MONDAY


Week 2, January 9-13, 2017

Monday, January 9.  Review Ideal Gas Law.  Balloon in the refrigerator experiment.

Tuesday, January 10.  SNOW DAY
Wednesday, January 11.  SNOW DAY

Thursday, January 12.  Notebook Review and catch-up day.  Read pages 432 and 439-440, and complete problems #7 in class.  Review of IDEAL GAS LAW and Standard Temperature and Pressure (STP).  Do problems #8-#9 on page 442 for homework.

Friday, January 13. IDEAL GAS WORKSHEET.  Homework DUE TUESDAY: 
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Chemistry.Gas.Problems.docx

Week 1, January 3-6, 2017

Standards Addressed:

Tuesday, December 3Introduction to gases.  Properties of Gases.  Derivation for the units of Pressure.  Homework:  Read pages 423-425.  Answer the question.  If you jettisoned an inflated balloon out the torpedo tube of a submarine at 3 km depth in the ocean, what would happen to it?

Wednesday, December 4.  Homework:  Read pages 426-428.  Answer the question on classroom.google.com.

Thursday, December 5.  Homework:  Read pages 429-430. 

Friday, December 6.  Class work:  Read pages 431-432 and do problems #5-9.  Homework due Monday:  Problems #10-12


FIRST SEMESTER

Week 16, December 5-9


Standards Addressed: 
NGSS HS-PS1-4  Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.
NGSS HS-PS3-4.  Plan and conduct an investigation to provide evidence that the transfer of thermal energy when two components of different temperature are combined within a closed system results in a more uniform energy distribution among the components in the system (second law of thermodynamics).

Monday, December 5.  Lecture on the laws of thermodynamics.  Discussion of temperature, enthalpy, and entropy from this perspective.  Introduction of Gibb's free energy with examples.  Homework:  Read pages 340, 347, 358-359, 362-363, and 366-367 and answer question on Googleclassroom before class tomorrow (Do not do any problems from the text.)

Tuesday, December 6.  Discussion of spontaneity and the laws of thermodynamics.  Topics of enthalpy changes (exothermic vs. endothermic),  entropy changes (order vs. disorder), and the effect of temperature.  Homework:  Read pages 393-398 and answer questions on Googleclassroom.

Wednesday, December 7.  Discussion of equilibrium.  Homework:  Read pages 399-405 and answer questions on Googleclassroom.

Thursday, December 8.  Review experiments in lab notebooks, evaluating each for enthalpy, entropy, and Gibbs free energy changes.

Friday, December 9.  Exam practice questions.


Week 15, November 28-December 2


Standards Addressed: 
NGSS HS-PS1-4  Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.
NGSS HS-PS3-4.  Plan and conduct an investigation to provide evidence that the transfer of thermal energy when two components of different temperature are combined within a closed system results in a more uniform energy distribution among the components in the system (second law of thermodynamics).

Monday, November 28.  Go over pages 38-45 in class.  Mixing marbles demonstration.  Endothermic reaction demonstration - Barium hydroxide and ammonium chloride.  Freezing water demonstration.  Concepts include: 1) temperature as a measure of the total vibrational energy of atoms and molecules;  2) the direction of heat transfer;  3) evidence for a chemical reaction (exothermic and endothermic);  4) temperature gradient is the "force" that drives heat transfer.  Define physical and chemical change in your notes.  Homework:  Read pages 338-344.  Before class tomorrow, answer the questions on Googleclassroom.  YES!  Your teacher is finally on the ball with Google classroom.  Make sure the answers to the questions are also in your notes.

Tuesday, November 29.   Heat capacity review.  The heat capacity of the "master ring" video.  Pre-lab for heat capacity of olive oil vs. water.  See lab rubric attached to this page.  Homework:  Finish pre-lab for heat capacity.... lab.

Wednesday, November 30.  Heat capacity of olive oil and water lab.  Use observations of the video to find evidence for the heat capacity of the "master ring".  Homework:  Finish results and discussion in your lab notebook.  Watch this video trial (do not register for the trial) to help you with your discussion:  http://study.com/academy/lesson/what-is-temperature-definition-lesson-quiz.html

Thursday, December 1. 

Friday, December 2. Lecture on the laws of thermodynamics.  Discussion of temperature, enthalpy, and entropy from this perspective.  Introduction of Gibb's free energy with examples.  Homework:  Read pages 340, 347, 358-359, 362-363, and 366-367 and answer questions on Googleclassroom before class tomorrow (Do not do any problems from the text.)



Week 14, November 14-18

Monday, November 14. 

Take this heat survey online individually:

  http://www.learner.org/courses/essential/physicalsci/session7/interactive.html

If the link won't work, try pasting it into your browser.  If that doesn't work, your sub has has my phone number, and I can e-mail copies of the questions.

Now watch the video at this link: 
http://www.learner.org/courses/essential/physicalsci/session7/index.html

The video is long, and the rest of the video is homework.

Tuesday, November 15

Prep for calorimeter lab.
HERE IS A COPY OF THE LAB IF YOU NEED IT:  coffee.cup.calorimeter.docx

Wednesday, November 16
Run calorimeter lab.  FIRST:  DO NOT COLLABORATE ON THIS!  Make your prediction, and outline your reasoning for your prediction on page 2 of your worksheet.  Also, make a diagram of the experiment you plan to do.  (You may use the diagrams on page 3 and 4 to help you if you like.)

SECOND:  YOU MAY COLLABORATE ON THIS PART.  Run the calorimeter lab, and collect data.  Make a data table for your data on page 3 of your worksheet.

THIRD:  YOU MAY NOT COLLABORATE ON THIS PART.  Work on the second prompt on page 2 of your handout, "Stating evidence from your investigation..."  This part is homework if you do not finish it in class.

Thursday, November 17
YOU MAY NOT COLLABORATE ON THIS PART:  On a separate page to attach to your handout, consider the following:

Using the data from the investigation as evidence, construct an argument that supports or rejects the claim that a coffee cup calorimeter is a closed system. Cite evidence when supporting or refuting the claim that the system is isolated from the surroundings.


Once you have done the above, then discuss the question among yourselves.  WITHOUT CHANGING WHAT YOU WROTE FIRST TODAY, add to or modify your prior writing, making sure to state reasons for any changes or additions that you make.


PUT ALL IN THE BOX FOR ME TO PICK UP THIS AFTERNOON. See you tomorrow.


Week 13, November 7-10
Standard Addressed:  NGSS-HS-PS1-1:  Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.
NGSS-HS-PS1-2:  Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties.

Monday, November 7:  Bond shapes and VESPR practice with models.  Discussion of electronegativity and bond type.

Tuesday and Wednesday, November 8-9.  Use all types of knowledge gathered about the elements to predict and test the properties of elements.  Exam Review.

Thursday, November 10:  Exam.


Week 12, October 31-November 4
Standard Addressed:  NGSS-HS-PS1-1:  Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.
NGSS-HS-PS1-2:  Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties.

Monday, October 31:  Experiment with zinc and iodide.  Homework for tonight:  Finish your lab discussion and work on your pre-lab.  Consider the following questions in your discussion:  1)  Summarize the evidence for chemical reaction;  2) Consider and discuss all of your hypotheses and predictions;  and 3) Discuss what your results suggest is happening in the valence shells of zinc, iodine, and zinc iodide (refer to pre-lab).  Optional is to discuss electrochemical demonstration with zinc iodide in solution.

Wednesday, November 2.  Finish discussion for lab report in class.  Homework:  Read pages 158-165 as well as pages 133-134.   Although the text separates these topics, they are closely related.  In your notebook, predict what stable ions some of the main block elements will form and explain your reasoning.

Thursday, November 3.  Energetics of salt formation.  Homework:  Read pages 190-198.  In your notebook, distinguish between covalent, polar covalent, and ionic bond types.

Friday, November 4  Architecture of different types of bonding using models and diagrams.  Work through Sample Problem D on page 211.  Homework:  Read pages 208-213, and do problems 6-8 in your notes.


Week 10, October 17-21
Standard Addressed:  NGSS-HS-PS1-1:  Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.

Monday, October 17, 2016.  Atomic radius and electronegativity as understood from diagrams of atoms and the valence shell.  Homework :  Read pages 116 and 123, and make timeline of discoveries to add to wall chart tomorrow in class.  Write down definition of "group" and "period".

Tuesday, October 18, 2016.    

Wednesday, October 19, 2016. 

Thursday, October 20, 2016.   Add Linus Pauling (electronegativity) and Nils Bohr (electron energy levels) and Einstein (photoelectric effect) to the atomic model timeline along with information from the homework.  Homework:  Read pages 90-99 and 140-141.  Teach me about quantum numbers.  What kinds are there?  What do they indicate?

Friday, October 21, 2016.  https://www.chemheritage.org/women-in-chemistry

Week 9, October 10-14
Standard Addressed:  NGSS-HS-PS1-1:  Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.

Unit Objective Question:  What do chemical formulae indicate about the composition and properties of compounds?

Monday, October 10, 2016.  Lecture on schematic representations of electron shells, filling electron orbitals, and Lewis dot structures.

Tuesday, October 11, 2016.  Volleyball.

Wednesday, October 12, 2016.  Video on elements in the universe.  Homework:  Read pages 142 - 147.  One paragraph answering the question:  Who was Lise Meitner?

Thursday, October 13, 2016.  Electronegativity, valence electrons and bonding.  Homework:  Read to fig. 2.

http://catalog.flatworldknowledge.com/bookhub/4309?e=averill_1.0-ch12_s05#averill_1.0-ch02_s01

Then answer this question:  Why do the elements shown form diatomic molecules?  Explain using atomic model diagrams and what you know about valence electrons and stability.

Friday, October 14, 2016.  Quiz. 
___________________________________________________________________
Week 8, October 3-7
Standard Addressed:  NGSS-HS-PS1-1:  Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.

Unit Objective Question:  What do chemical formulae indicate about the composition and properties of compounds?

Monday, October 3.  Read pages 84-89 in the textbook and do practice problems A #1-4 on page 86 and practice problems B #1-2 on page 89.  Homework is: problem numbers 1, 2, 3, 5, 6, 7, and 8 on page 89.

Tuesday, October 4.  Review mass number, atomic number, and structure of the atom.  Bookmark:  http://www.westfield.ma.edu/cmasi/gen_chem1/Atomic%20and%20molar%20mass/atomic_and_molar_mass.htm 

Wednesday, October 5.  Review calculating average molar masses.  Average molar mass and natural abundance worksheet. Review photoelectric effect.  Sun-wheel observation... particle nature of light.  Try to download SpectraSnapp onto your phone.  Wave nature of electrons:  look at spectra with spectrasnap. Check out animation:  https://phet.colorado.edu/en/simulation/photoelectric  Homework:  Read pages 90-94 and write pre-lab for photoelectric effect experiment.

Thursday, October 6.  Photoelectric effect lab observations, results, and conclusions.  Results and Conclusions are homework if you don't finish in class.

Friday, October 7.  Volleyball




Week 7, September 26-30
Standard Addressed:  NGSS-HS-PS1-7:  Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.

Unit Objective Question:  What do chemical formulae indicate about the composition and properties of compounds?

Monday:  Investigate the law of conservation of mass with an experiment.  Reference
QuickLab.Rubric.chem.docx  Homework:  Read pages 79-83 for tomorrow, and be prepared to participate in class discussion.

Tuesday:  volleyball

Wednesday:  Finish law of conservation of mass lab;  results and discussion due on Friday.  Homework tonight -- Read pages 36-52 of Richard Rhodes, The Making of the Atomic Bomb.  Be prepared to discuss the life and discoveries of Rutherford in class tomorrow.  Make a list of things you will be prepared to share with the class in your notebook (you should have at least five things.) 

Thursday:  Class discussion of the Life and Discoveries of Ernest Rutherford.  Cathode Ray tubes observation and discussion.  Statement of the electrical nature of chemistry.  Discussion of Atomic Number, Mass Number, and corresponding electrons and comparison with the periodic table.  Alpha particles and gold foil.  Notes on timeline. Homework:  Read Biography of Lavoisier and take notes.

Friday:  Quiz.  Notebook review.
______________________________________________________________________________________________________
Week 6, September 19-23
Standard Addressed:  NGSS-HS-PS1-7:  Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.

Unit Objective Question:  What do chemical formulae indicate about the composition and properties of compounds?

Monday:  Law of multiple proportions activity and notes.  Homework:  Read pages 74-78 and do problem #9 on page 78 in your notebook.

Tuesday:  substitute teacher.  Build a timeline poster describing the scientific discoveries that led to the current version of atomic theory.  Check out the following website:  http://atomictimeline.net/index.php
Not all significant contributions are discussed in that website, so be sure to include the contributions of Lavoisier and Proust to the development of Dalton's atomic theory.

Wednesday:  Build a timeline poster (continued).

Thursday and Friday - Yosemite Field Trip

Week 5, September 12-16

Unit Objective Question:  What do chemical formulae indicate about the composition and properties of compounds?

Monday:  Exam
Tuesday:  Exam, Homework:  read pages 224-229, including quick-lab.  Write a pre-lab for the quicklab, including diagram, data table, and procedure.  Write a hypothesis to answer question #4.  (see lab rubric attached to this web page.
Wednesday, Quicklab on page 225.  Do lab and write results in words.  Homework:  Answer questions in the analysis for your lab discussion.  Review Inset on page 58 for tomorrow.
Thursday, Review Inset on page 58.  Do problems in class Sample Problems A-D.  Homework:  Problems 9-11 on page 233.
Friday, Quiz.  Turn in Notebooks.

Week 4, Sept. 6-9

Unit Objective Question:  Why do different substances have different chemistry and properties?

Tuesday - Wednesday:  Prepare for exam.
Thursday-Friday:  Exam


Week 3, August 29

Standard Addressed:

Unit Objective Question:  Why do different substances have different chemistry and properties?

Monday, August 29, 2016.  Perform recrystallization.  Read pages 4-9 for homework.  Be ready to identify 3 evidences for chemical change vs. physical change.

Tuesday, August 30, 2016.  Finish collecting crystals and leave to dry.  Melting paraffin experiment - floating solid.  Introduce third answer to unit objective question:  substances behave differently, because they are made of different bond types:  ionic, covalent, metallic, and hydrogen-bonds.  Make table for tomorrow and for Thursday's field trip.

Wednesday, August 31, 2016.  Freezing water and salt-water experiment.  Collect data and write up results.  Homework:  Read pages 378-389 in your textbook and use them to write a discussion (one or two paragraphs) for your lab report.

Thursday, September 1, 2016.  Field trip to DesChambeau Ponds.  Collect pH data, temperature data, water depth data.

Friday, September 2, 2016.  Quiz.

Week 2, August 22-26, 2016

Unit Objective Question:  Why do different substances have different chemistry and properties?

Monday, August 22, 2016.  Review household acids and bases homework.  Review Structure of Water.  Work with triple beam balances.  Record weights noting significant figures and calculate %error.  Read textbook pages 10-18.

Tuesday, August 23, 2016.  Notes on Reading - include table of SI units in your notebook.  Thinking map listing physical and chemical properties.  Lab - calculating densities.  No homework.

Wednesday, August 24, 2016.  Finish lab on calculating densities.  Do calculation for unknown nugget, and compare to Appendix A-5.  Use Appendix A-5 to write out the densities of the elements in Row 4 of the periodic table.  Do you see any pattern?  What do you think the unknown nugget is, and why do you think that?

Thursday, August 25, 2016.  Go over in class: "Bitesize" compounds and mixtures pages 1-9:  http://www.bbc.co.uk/bitesize/ks3/science/chemical_material_behaviour/compounds_mixtures/revision/1/   In your notebook, describe or diagram the different ways to separate mixtures.  Homework:  Read lab for tomorrow and write procedure in your notebook. 

Friday, August 26, 2016.  Quiz.  Be ready for lab on Monday.


Week 1, August 15-22, 2016

Standard Addressed
NGSS-HS-PS1-3:  Plan and conduct an investigation to gather evidence to compare the structure of substances at the bulk scale to infer the strength of electrical forces between particles.

Unit Objective Question:  Why do different substances have different chemistry and properties?

Monday, August 15, 2016.  Burning sugar and salt with Mr. Godoy.-- entry in lab notebook.

Tuesday, August 16, 2016.  Go over class structure.  Review the definitions of hypotheses, theories, and laws in the context of our everyday lives.  Go over observations from yesterday's lab.  Class Work - students write up their results in lab report format.  Homework is reading pages 11-13 from Pauling and formulating definitions for vocabulary.

Wednesday, August 17, 2016.  Review elements (O, C, H, Na, and Cl) and vocabulary (theory, law, hypothesis, substance, property, intrinsic property, chemical reaction).  Unknown substance pre-lab, set-up, and experiment.  Results and discussion for homework.

Thursday, August 18, 2016.  Model Discussion for unknown substance lab.  Work with models to brainstorm possible structures for unknown substance.  Work with snowflake reproductions to find symmetry.  Naked Science video of structure and properties of ice.  Video of breaking calcite.  For homework, work with paper models of water to elucidate structure of ice.  Also for homework, reading from "This Idea Must Die" and Pauling investigating the importance of laws in science.

Friday, August 19, 2016.  Compare different solutions for the structure of ice.  Final try due on Monday.  Debate - Are scientific laws good or bad for science.
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Liz Roripaugh,
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