Across
- 6. when a complex substance breaks down into simpler substances
- 7. the chemical formula for carbon dioxide
- 8. The quantity of something(measured by weight)
- 9. the letters and numbers that make up a substance
- 10. when two substances combine to make a more complex substance
Down
- 1. substances that are added together to make a new substance
- 2. ensuring both sides are equal
- 3. a substance made up of multiple different elements
- 4. A very small particle
- 5. when two substances mix, this is the by-product