Across
- 4. A reaction that involves oxygen and produces heat
- 6. The reaction containing two compounds exchanging ions
- 9. The number written in front of a formula in equations
- 10. A solid formed in a solution reaction
- 12. The substance formed in a chemical reaction
- 15. The Term for a substance that speeds up reactions
- 17. The substances present at the start of a reaction
- 19. A sign of a chemical change
- 21. The reaction involving both acids and bases
- 23. The law that states matter is not created or destroyed
- 24. The term for a chemical equation with equal atoms on both sides
Down
- 1. The process of gaining electrons
- 2. The color change in a reaction
- 3. A type of bond is formed by electrons sharing
- 5. The reaction that releases heat
- 7. The reaction that absorbs heat
- 8. The minimum energy needed to start a reactions
- 11. A type of bond involving electrons transfers
- 13. The reaction that occurs in batteries
- 14. The reaction that breaks a compound into parts
- 16. The reaction that combines two or more substances
- 18. The reaction that goes both forward and backwards
- 20. A gas that is commonly produced in metal-acid reactions
- 22. The process of losing electrons
- 24. The term for substances that resist changes in pH