Friday was test day. We took the Unit 2 test with 33 multiple choice questions and one page of naming and formula writing with a short calculation. There were 50 questions worth 2 points each. Up-to-date grade printouts will be available on Monday. This day marks the official end of Unit 2.
Unit 3 will continue on Monday. (We've already had a day and a half of this unit, in which we learned how to use conversion factors and the meaning of the atomic mass unit and relative atomic masses.) As we continue through Unit 3 we will learn about the mathematical relationships associated with the chemical formulas. We will learn that a chemical formula reveals quantitative information about the gram-to-gram and atom-to-atom relationships for the elements within a chemical compound. This unit will be the first of several math intensive units within the course.
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