Across
- 1. Compound of cobalt has ___ colour
- 7. One observation of reaction (rapid bubbles)
- 8. A substance that does not dissolve in water
- 9. A substance that undergoes a chemical change
- 10. Law of _______ of mass
Down
- 2. Most chemical changes can not be undone, they are____
- 3. During a chemical reaction what happens to the atoms
- 4. Any reaction that involves burning
- 5. These are tiny suspended solid particles
- 6. A new substance that forms in a chemical reaction