Monthly Archives: November 2016

3 Types of Acids and Bases

  1.  A quick review from last week’s class:  We went over the questions I left you to answer with the TOC.  See ch16 learning log and “cookies”:  ch16-chemical-equilibrium-learning-outcomes-learning-log-2016 and chapter-16-cookies and chapter-16-cookies-part-2
  2. I will be able to identify the 3 types of acids and bases:  Arrhenius, Bronsted-Lowry, and Lewis
  3. Read sections 15.1, 15.2, and 15.5 and do some of the practice questions from your textbook.
  4. Activity:  Identifying common household products as acids or bases using a variety of chemical indicators.
  5. Do:  Self-Test worksheet  chemistry-12-self-test-1-worksheet

Molar Mass and the Mole

  1.  I will be able to explain Avogadro’s hypothesis.  Read p.77, last paragraph.
  2. I will be able to calculate the molar mass of a substance, the number of moles of substance, and the mass of a substance.
  3. Do:  p.80 #6-7 and p.82 # 8-10

Intro to Acids and Bases

  1.  Do test corrections for the Keq test.
  2. Begin reading chapter 16.1 and 16.2 on Acids and Bases and take notes.  Use these questions to help focus your reading:
  1. a) There are 3 types of acids and bases we will look at this year: Arrhenius, Bronsted-Lowry, and Lewis. How are they similar?  Different?
  2. b) What are conjugate acid-base pairs? Give examples. What are strong acids/bases?  Weak acids/bases? How can you use the data table on p.657 to determine which acid is stronger?
  3. d) How can you tell from the K (equilibrium constant) whether an acid is stronger than another acid? (or a base is stronger than another base)

3.  Start on the worksheet: “Acids and Bases” (How do they behave in water?) and “Strong vs Weak Acids”.  See copies here:  32-acids-and-bases-s and 33-strong-vs-weak-acids-s

Keq Calculations

  1.  Quick Review of Keq constant and Keq expression.
  2. I will be able to use the Keq expression to solve for [ ].
  3. Fill in the study guide.  See Block 6 notes here:  keq-follow-along-notes-bk6
  4. Read Unit II.8 and do as many of the questions from this section as you can.  You will have time next week to finish them.
  5. Finish test corrections and analysis and be ready to do a retest if you want to re-assess certain learning outcomes.

Relative Mass

  1.  Complete the grocery list by filling in the missing units:  one ___ eggs;  two ____ milk;  three ____ flour.  What are the quantities we usually measure these quantities?
  2. How can you measure a grain of rice?  It is probably too small to weigh the mass of one grain of rice on a balance.  Instead, we can weigh a tablespoon of rice on a balance and find the mass a many grains of rice, for example, 1 tablespoon of rice weighs 10g.
  3. I can use the relative mass of objects to find the mass of an object.  Example:  If 1 tablespoon of staples weighs 20g and weighs twice as much as a tablespoon of rice, how can I find the mass of one grain of rice?
  4. Activity:  Find the Relative Mass of Large and Small Paper Clips
  5. Read Unit V.1 and try some of the questions in that section.
  6. Go over writing and naming compounds quiz at the end of class.