Across
- 3. Physical "stuff." Makes everything
- 4. Cleanest material to produce
- 5. What we use to prove a claim
- 8. Creates the MOST pollution during production
- 9. Brittle material used for drink containers
- 11. Ancient philosophers thought there was only______elements
Down
- 1. A characteristic of a substance
- 2. Toxins from plastic
- 6. The study of matter
- 7. A substance we use to make things
- 10. Smallest unit of measure