Across
- 2. group that makes 1- ions
- 5. consists of only one type of atom
- 7. compounds that have a bond between metals and non-metals
- 9. formed when an atom loses electrons
- 10. consists of two or more atoms
- 12. compounds in which atoms share electrons
- 13. indicates the number of protons in the nucleus
- 14. word used to describe the outermost electron shell
- 15. metals found in centre of periodic table
- 16. type of ion that has more than one element in it
- 17. formed when an atom gains electrons
- 18. elements with a full valence shell
Down
- 1. building blocks of all matter
- 3. uncharged particle found in the nucleus
- 4. group that makes 1+ ions
- 6. negative particle that orbits the nucleus
- 8. consists of two or more elements
- 11. indicates the number of nucleons in the nucleus
- 16. positively charged particle in the nucleus