Periods 1, 4, 6 & 7: 
Answer these Analysis Questions: 

1.What evidence do you have that a chemical reaction took place between 
     a. copper chloride solution and aluminum?


2. What can you conclude about the effect of a chemical reaction on the mass of reactants in a closed system?  Support your answer with evidence from this activity. Note: all of the terms in bold are vocab terms that should be defined in your science notebook. 


3. Using  what you know about the Law of Conservation of Mass, how would you respond if a company said it had developed a way to make hazardous materials and wastes "disappear"?

NOTE: Unit Test Friday, March 31, 2017