Across
- 1. A reaction where one element replaces another in a compound
- 4. Substances formed in a reaction
- 5. Two or more substances combine into one
- 7. The number in front of a chemical formula
- 10. Bubbles or odor are signs of this
- 11. A reaction that absorbs heat
Down
- 2. A reaction that releases heat
- 3. Two compounds swap parts
- 6. One compound breaking apart
- 8. The small number written below an element symbol
- 9. Starting substances in a reaction