Across
- 3. it's a fossil fuels and makes a word with dioxide.
- 5. multiple atoms together.
- 7. the building block of all matter.
- 8. molecules in a open space and move super fast.
- 10. molecules that move around but more confined.
- 12. solid going to gas.
Down
- 1. the third shell on a atom.
- 2. liquid to gas.
- 4. positively and negatively charged ions able to move around slightly.
- 6. most commonly used in nuclear-reactors.
- 9. molecules that barely move and are in a super confined space.
- 11. multiple substances mixed up but not quite together.