We began Ch. 7 on Thursday, discussing the difference between an acid and a base, properties and examples of each, the pH scale and neutralization reactions.    Today, we reviewed this information and students are to complete the following for homework: pg. 218 # 2, pg. 225 # 1, 2, 3 and pg. 236 # 1, 2, 3   Chapter 6 tests were returned on Thursday and are to be signed and returned.