Science Crossword

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Across
  1. 2. A reaction that takes in heat
  2. 3. Substances that exist before the chemical reaction.
  3. 6. What needs oxygen and causes fire?
  4. 10. Substance that is created after the chemical reaction
  5. 11. A reaction that gives off heat
  6. 13. A reaction involving oxygen
  7. 14. The substance that dissolves the other substance
  8. 16. Gas that is made when the fire is burning.
  9. 19. The breakdown of a compound into smaller substances.
  10. 20. The number in front of formulas in chemical equations.
Down
  1. 1. Mass cannot be destroyed not be created.
  2. 4. "Universal Solvent"
  3. 5. A reaction where two substances combine
  4. 7. When a object changes its substance.
  5. 8. The process of rust forming.
  6. 9. A reaction where atoms swap partners.
  7. 12. The study of chemicals.
  8. 15. A fast and violent reaction
  9. 17. A fire needs this gas to start.
  10. 18. The substance that gets dissolved