Across
- 4. Horizontal row in the periodic table
- 6. abbreviation of atomic mass unit
- 10. Smallest atomic mass
- 11. Organic catalyst
- 12. Going from being a solid to a gas
- 14. Another factor that can affect the rate of reaction
- 16. Symbol on periodic table is O
- 18. Positively charged subatomic matter
- 21. Materials at the start of a reaction
- 23. Means indivisible
- 24. Common name of Dihydrogen monoxide
- 25. Column or family on the periodic table
Down
- 1. Negatively charged subatomic matter
- 2. A metal that is a liquid at room temperature
- 3. A factor that can affect the rate of reaction
- 5. Going from being a gas to a liquid
- 7. Ionic compound formula is NaOH
- 8. Man who thought all matter is made up of air, fire, water, and earth
- 9. Planet used to identify tin
- 10. Group of most reactive non-metals
- 13. Group of metals that are the most reactive
- 15. Chemical reaction that releases heat
- 17. A liquid at room temperature atomic mass of 80
- 19. Material that cannot be broken down into any simpler substance
- 20. Previously represented by the planet mars
- 22. Planet used to identify lead