Across
- 2. element that is shiny and conducts heat and electricity
- 4. light needed for photosynthesis to take place
- 5. substance with only one type of particle
- 8. state of matter of the sun
- 10. cannot be separated into simpler substance by chemical means
- 12. the smallest unit of a chemical element
- 14. substance made up two or more different elements chemically bonded together
- 16. state of matter definite volume and particles can flow
- 17. chemical reaction that happens in all living cells
Down
- 1. element that conducts heat and electricity poorly
- 3. the smallest naturally occurring particle of a substance. It may contain one atom (neon) or many thousands of atoms (protein)
- 6. metal used to wire homes
- 7. product of respiration
- 9. used to make rings gold
- 11. state of matter where particles are packed tight but vibrate
- 13. reactant in photosynthesis
- 15. substances together but not chemically combined
- 16. needed for photosynthesis to take place