Choice Board

12345678910
Across
  1. 3. part of the periodic table
  2. 5. Something that speeds up a reaction
  3. 6. the result of a chemical reaction
  4. 9. a substance that changes in a chemical reaction
  5. 10. The smallest unit of matter
Down
  1. 1. A group of bonded atoms
  2. 2. A number that appears slightly underneath an element which shows how many of each atom there are in the molecule
  3. 4. A performance usually done in a lab to find something out
  4. 7. A … reaction
  5. 8. The event that occurs when two products have contact