Across
- 1. reaction a change of physical form
- 3. shiny and reflective
- 5. a positive electric charge
- 7. the center of an atom
- 8. a substance that cannot be decomposed into another substance
- 9. a row of chemical elements
Down
- 1. can hold electricity
- 2. the amount of space an object takes up
- 4. two elements formed together
- 6. the ability to become another object when pressed