Monthly Archives: September 2016

Lab: Thickness of Aluminum Foil

  1.  Warm Up! – unit conversions and following sig fig rules.  See block 8:  warm-up
  2. Go over Density of Water activity – did you measure to the correct place value?  Did you follow sig fig rules when you calculated the density?
  3. Lab:  Find the Thickness of a Sheet of Regular and Heavy Duty Aluminum Foil.  See lab instructions here:   lab-find-the-thickness-of-a-sheet-of-aluminum-foil and how to write a lab report:  how-to-write-a-lab-report
  4. Note:  Quiz on Sig Figs and Unit Conversions on Tuesday;  Unit II test on Thursday
  5. You can do the review worksheet for Tuesday and/or you can finish it on Tuesday.

Iodine Clock Challenge

  1.  Any questions about collision theory?
  2. Lab Challenge:  Iodine Clock Reaction.  Watch my demo.  In pairs, plan an experiment that will change the factors that affect the rate of the reaction so that the reaction changes color at a specified time.
  3. Lab write up:  explain purpose, materials used, what you did (can be a flow chart, pics, bulleted, etc…), results.  What factors may have affected your results and caused inconsistencies in the timing?
  4. Finish your mini project for next week.
  5. We will go over the 2nd POGIL WS next week.

Factors Affecting Reaction Rate

  1.  Hand in the Lab Safety Worksheet
  2. Finish going over the “Rates of Reaction” POGIL WS
  3. Demo:  Mg in HCl
  4. In pairs, choose what factor you want to change and how you will measure it.  Design an experiment to test it.  “If I change ____, what will happen to ____?  If the _____ is ____, then the ____ will ____.  I think this will happen because….”   (ie. If I change the surface area, what will happen to the temperature?  If the surface area is increase, then the temperature will increase.  I think this will happen because….)

5.  I will be able to explain how factors affect the reaction rate.

6.  Do:  Read sections 1.3 and 1.4 and do some of the practice questions.

Sig Fig Rules

  1.  Warm Up! – unit conversion practice
  2. Go over POGIL Worksheets on Significant Figures
  3. I will be able to read scales with the correct precision.
  4. I will be able to apply sig fig rules.  See block 5 notes here:  rounding-5s-and-sig-fig-rules
  5. Activity:  Find the Density of Water
  6. Do:  Workbook Unit II, section 5 questions
  7. Next class:  Lab Activity with aluminum foil
  8. Note:  Quiz next Tues;  Unit II Test on Thursday

Significant Figures

  1.  Lab Safety Test
  2. I will be able to make the best measurements.
    1. I understand the difference between accuracy and precision.
    2. I can count the number of significant figures in a measurement.  See Block 5 notes here:  study-guide-intro-to-measurement-and-communication-day-2
  3. Do:  POGIL worksheets “Significant Digits and Measurements” and “Significant Zeros”.  See a copy of the handout here:  5-significant-digits-and-measurement-s and 6-significant-zeros-s

Intro to Ch14 – Reaction Kinetics

  1.  Lab Safety – I will be able to work safely in our classroom.
  2. Do:  Lab safety worksheet  lab-safety-cartoon-picture-and-questions
  3. Activity:  HCl and Mg .  In your groups, test the question you chose to explore.  What did you choose to change?  What did you choose to measure?  Record your results.  Be prepared to share your results with the class.
  4. Do:  POGILS on reaction rate rates-of-reactions-pogil and method-of-initial-rates-pogil
  5. Here are the “cookies” for chapter 14:  ch14-cookies_12

Lab Safety – Day 2

  1.  I will be able to identify the 8 WHMIS symbols. (see handout from last class)
  2. I will be able to locate lab safety equipment in our classroom.  See activity here:  safety-equipment-in-rm113
  3. Lab Safety Video:  Accident at Jefferson High

4.  Lab Safety Test next class.  It will have 3 parts:  multiple choice questions based on lab safety rules and practices, matching WHMIS symbols, and labelling a diagram of our room with where safety equipment is located

5.  I will be able to define accuracy and precision.  See handout here:  study-guide-intro-to-measurement-and-communication