Across
- 5. A neighbour introduced me to a friend of his named Allen: "Hey, have you…?"
- 7. How much mass is contained in a unit of a substance
- 11. The flow of electrons
- 12. The cycle in which carbon is moved around the biosphere
- 15. Charging two neutral objects by rubbing them together
- 16. Smallest unit of an element
- 17. The flow of electrical current in one directon
- 18. A device used to mesure electrical current
- 21. Charging an object by bringing a charged object close to but not touching a neutral object
- 22. A material that doesnt conduct electricity
- 23. A pure substance
- 24. The mass of a single atom
Down
- 1. Drawing of an electrical curcuit
- 2. The gas around the earth where life can exist
- 3. The number of protons in an atoms structure
- 4. A change in chemical matter
- 6. an element in Group 1 of the periodic table
- 8. Allows energy to flow through it
- 9. An organism that gets its energy by eating another organism
- 10. All the organisms in their environment
- 13. Charging an object by contacting it with a charged object
- 14. Layer of gas surrounding earth
- 19. Slows the flow of electrons
- 20. non living part of ecosystem