Across
- 3. – How particles move when heated
- 9. – A circuit with more than one loop
- 10. – Controls the activities of the cell
- 14. – A substance made of only one type of atom
- 15. – The part of a plant cell where photosynthesis happens
- 16. – Gas produced during photosynthesis
- 17. – Process that uses glucose and oxygen
- 18. – Gas needed for respiration
Down
- 1. – Two or more elements chemically joined together
- 2. – Shiny, strong materials that conduct electricity
- 4. – Movement of gas particles causing pressure
- 5. – How fast breathing happens
- 6. – Substances combined but not chemically joined
- 7. – Force caused by gas particles hitting surfaces
- 8. – Provides energy in an electrical circuit
- 11. – A metal used for electrical wires
- 12. – A circuit with only one loop
- 13. – The amount of mass in a given volume