Across
- 4. Large number written in front of elements in a formula
- 6. A substance formed when 2 or more elements or compounds are mixed together but not bonded
- 9. Substances that you start with that change in a chemical reaction
- 10. A substance formed when 2 or more elements are chemically bonded together
- 11. A reaction that releases more energy than it uses (hot)
- 12. States that the mass of the reactants equals the mass of the products
- 13. A substance that changes its form or phase but remains the same substance
Down
- 1. When different substances combine to form new substances
- 2. Contains just one type of atom
- 3. A reaction that absorbs more energy than it releases (cold)
- 4. A substance that changes into a completely different substance with different properties
- 5. A solid that is produced in a chemical reaction
- 7. New substances that result from a chemical reaction
- 8. Small number written after an element symbol