C. neither a physical or chemical changu
d. both a physical and chemical change
2. if a substance changes color then what has occurred?
a. physical change
b. chemical change
c. either a physical or chemical change
d. neither a physical or chemical change
3. which of the following is not an example of a physical cha
ta) new substance is formed

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car