Across
- 1. oxygen is added to a chemical in a reaction
- 3. made up of more than one type of element or compound
- 4. water turning into ice
- 6. scientific word for burning
- 7. smallest part of any substance
- 8. made up of 1 type of atom
Down
- 2. breaking down a substance using heat
- 5. heat entering a reaction-feels colder
- 6. made up of 2 or more types of atoms joined together by chemical bonds