Across
- 2. the small number in an equation
- 5. changes that make a new substance
- 6. a reaction that takes in heat
- 8. changes that keep the same substance
- 9. group of atoms bonded together
Down
- 1. smallest unit of matter
- 3. the result of a chemical change
- 4. a reaction that gives out heat
- 6. the letters in the equation
- 7. the best teacher in 8th grade