Across
- 3. part of the periodic table
- 5. Something that speeds up a reaction
- 6. the result of a chemical reaction
- 9. a substance that changes in a chemical reaction
- 10. The smallest unit of matter
Down
- 1. A group of bonded atoms
- 2. A number that appears slightly underneath an element which shows how many of each atom there are in the molecule
- 4. A performance usually done in a lab to find something out
- 7. A … reaction
- 8. The event that occurs when two products have contact