1. Indicate whether the following statement represents a chemical change, a physical change, or no change occurred: Candle wax is melted.

2.

A pure substance A is found to change upon heating into two new, pure substances, B and C.

A B + C

Neither B nor C can be decomposed by chemical means. From this we may conclude that ________.

	A.	A is an element, B and C are compounds
	B.	B is a compound, A and C are elements
	C.	B and C are elements, A is a compound
	D.	A, B, and C are all compounds

3.

Classify as homogeneous mixtures or heterogeneous.

A glass of Coca-Cola (the substance in the glass, not the glass itself)