Across
- 2. How many electrons can fit on the second and third shell?
- 3. These are found around the outside of the nucleus in shells.
- 7. What are the elements in group 1 of the periodic table commonly known as?
- 8. How many electrons can you fit on the first shell?
- 10. The charge on a proton
Down
- 1. The charge on a electron
- 4. A substance containing only one type of atom.
- 5. What are the elements in group 7 of the periodic table commonly known as?
- 6. Where do we find protons and neutrons?
- 9. A substance containing two or more types of atom chemically bonded together.