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Matter (Changes)

Chemical and Physical Changes

Matter always stays the same. False
A physical change is a change in size, shape or phase of matter, without the matter changing chemically. True
In a physical change, matter cannot change its shape. False
The ability to burn is a chemical property called “flammability.” Truse
A chemical change is a process by which a certain substance becomes a different substance. True
In a chemical change, the same substance is formed. False
Chemical changes occur at the same speeds. False
Photosynthesis is an important chemical reaction on earth. True
Chemical reactions occur when two or more substances combine to form a new substance. True