Across
- 4. A change that is not reversible
- 5. A substance that is made by a reaction
- 7. ____________ of mass, mass of reactants is equal to mass of products
- 8. A change that is reversible
- 11. Where a compound breaks down into two or more products
- 12. A way of showing a reaction using chemical symbols
- 13. A reaction that transfers energy from the surroundings
- 14. The equation is ________ if both sides have the same number of atoms
Down
- 1. A burning reaction that gives off light and heat when a substance reacts with oxygen
- 2. A reaction that transfers energy to the surroundings
- 3. The starting substances in a reaction
- 6. In a chemical ______ atoms rearrange and form new substances
- 9. A material that burns to transfer energy
- 10. A reaction where a substance reacts with oxygen