Across
- 1. first step in the scientific method
- 4. the science that tries to understand how matter behaves by studying how molecules and atoms behave
- 7. a substance made of two or more elements
- 10. a singular substance that cannot be broken down into any simpler substances
Down
- 2. a chemical reaction that releases energy
- 3. the measurement of space within an object
- 5. a chemical reaction that absorbs energy
- 6. mass divided by volume
- 8. the measurement of the quantity of matter within an object
- 9. "model"; an explanation for laws and observations