3. which of the following is a chemical change ?
-ice melting
-ice being carved
- water boiling
- water breaking down into hydrogen and oxygen
4. which of the following is not a pure substance?
-milk
- oxygen
- water
- carbon dioxide
5. matter that has a definite volume but no definite shape is
- liquid
- solid
- gas
- plasma
6. forces of attraction limit the motion of particles most in?
- a solid
- a liquid
- a gas
- both a liquid and a gas
fill in the blank
7. a( change occurs when a material changes shape or size but the composition of the material does not change.
properties can be observed only when the substances in a sample of matter are changing into different substances.
9. materials can be classified as solids, liquids, or gases based on whether their shape are definite or variable.
10. the theory of matter states that all particles of matter are in constant motion.