Across
- 2. plants produce food using sunlight
- 3. a pure substance
- 5. group of atoms bonded together
- 7. the big number in front of the formula
- 8. the smallest particle of matter
- 9. the small number behind the element
- 10. substance formed as a result of a chemical reaction
Down
- 1. describes a chemical reaction
- 4. change in form or appearance
- 6. the starting materials found in a chemical equation