Across
- 1. type of covalent bond in which electrons are NOT shared equally
- 3. sum of all reactions in a body
- 7. reaction that releases heat
- 9. reaction that absorbs heat
- 12. catalysts in living organisms
- 14. type of reaction in living organisms
- 15. substance that produces hydronium ions in water
- 16. ability to dissolve
- 17. number written in front of a chemical in order to balance an equation
- 18. substance that lowers the activation energy for a reaction
- 19. ending substance in a reaction
Down
- 2. starting substance in a reaction
- 4. attractive force between molecules
- 5. process that changes chemicals into other chemicals
- 6. substance that produces hydroxide ions in water
- 8. ability of a molecule to be attracted to itself
- 10. type of covalent bond in which electrons are shared equally
- 11. ability of a molecule to be attracted to another molecule
- 13. type of energy needed to start a reaction