Across
- 3. a reaction that gives off heat
- 5. writing the reactants and products of a reaction
- 8. chemicals that combine in a chemical reaction
- 9. a chemical change through combination with oxygen
- 10. a chemical change is...
Down
- 1. a chemical change through burning
- 2. compound produced in a chemical reaction
- 4. a physical change is...
- 6. a reaction that takes in heat from surroundings
- 7. speeds up or slows down a chemical reaction but does not take part