Across
- 1. the degree or intensity of heat present in a substance or object
- 5. a change is size or shape
- 6. see with the naked eye
- 8. reaction that releases heat
- 9. needs a microscope
Down
- 2. reaction that takes in heat
- 3. the basic building block of all matter
- 4. two substances mixeds to create a new substances
- 7. a cluster of atoms