Across
- 7. release energy
- 8. Absorbs energy
- 10. Small number found to the right of each element
- 11. two liquids combined to make a solid
- 12. open allows matter to leave and enter but closed does not
Down
- 1. What you end with (left)
- 2. elements you start with (right)
- 3. involves observable change
- 4. mass is neither created nor destroyed during chemical reactions
- 5. A short way to show a chemical reaction using symbols
- 6. number in the front of the equation
- 9. Something that causes the chemical reaction