Across
- 4. The outer most orbital
- 7. Regions of space outside the nucleus
- 8. rows and colors
- 9. an object that radiates heat
- 10. Atomic particles in the nucleus
- 13. The letters for the element
- 14. something that has opposite properties of metal
- 16. Rows going down
- 17. a Russian Chemist
- 19. the smallest part of an element
- 20. The number of a proton or electron
- 23. a group of atoms bonded together
- 25. when a layer of one mental goes and sticks onto another metal
Down
- 1. a result of a chemical action
- 2. elements that are strong and elements that are in a lot of things
- 3. the mass of products Ina chemical reaction must equal the mass
- 5. A particle that moves around the nucleus
- 6. The center of the atom
- 11. particles that have a positive charge
- 12. A part or aspect of something that is essential
- 15. sucks energy inside of it
- 18. a substance that changes during reaction
- 20. The mass of an element
- 21. elements that are in between
- 22. a gaseous element such as helium
- 24. all molecules , but not all molecules are compounds