Across
- 2. Represented by an addition sign
- 5. Reaction or process that absorbs heat
- 7. Two substances are joined together to become one
- 9. Matter cannot be created or destroyed
- 11. Reaction or process that releases heat
- 12. The change of one or more substances into something new
- 14. Big number out front that tells you how many
- 15. Small number behind a letter, tells how many atoms are bonded together
Down
- 1. represented by an arrow
- 3. Burning (producing carbon dioxide and water
- 4. One substance is broken down into two or more
- 6. One element swaps places with another
- 8. Two compounds switch elements
- 10. The ingredients in a chemical reaction
- 13. The final substance formed in a chemical reaction