Purpose:

• Do you remember the Riverwood Fish Kill? Do you also remember that the unit test will be determining the cause of the fish kill based on evidence. Something dissolved in the water may have been responsible for the fish kill. Therefore, understanding something about the solubility of substances in water may be necessary to determine a cause.
• The purpose of this activity is to learn some vocabulary related to solubility, relate temperature and solubility, and read and construct solubility curves.
• RI Grade Span Expectation PS1 (9-11)-1 Students demonstrate an understanding of characteristic properties of matter by …1a utilizing appropriate data (related to chemical and physical properties), to distinguish one substance from another or identify an unknown substance.

Assignment:

Do 1-5 BEFORE doing the lab activity. (Be prepared for a quiz before starting the lab.)

1. Read textbook section 1.C.1 Solubility of Solids in Water (pp53-55).
2. Be sure to learn the vocabulary words highlighted in the text.
3. Pay attention to sample problems 1-3 on page 54. Answer the questions posed in the problems in your notebook.
4. Read textbook section 1.C.2 Solubility and Solubility Curves (pp55-56). Pay attention to the sample problems.
5. Answer questions 1-3 on page 56.

Lab Activity:

1. Read text section 1.C.3 Constructing a Solubility Curve (pp 57-59). Pay particular attention to the safety considerations!
2. Carry out the procedure on pp 57-59.
3. Do the data analysis and answer questions 1-6 on page 59.

To Be Handed In:

• Your data.
• Data analysis (including graph).
• Answers to questions 1-6 on page 59.