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Matter (Changes)
Chemical and Physical Changes
| Question | Answer |
|---|---|
| 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 |