Across
- 3. a substance that is present at the end of a chemical reaction.
- 4. small, but critical structures inside of plant cells
- 9. to change something
- 10. a colorless, odorless gas found in our atmosphere
Down
- 1. a substance that enters into and is altered in the course of a chemical reaction.
- 2. the process by which plants use that forms sugar.
- 5. a chemical element that is a gas with no smell or color.
- 6. maker of something
- 7. breaks down dead materials
- 8. a process that occurs when two or more molecules interact to form a new product(s)