Across
- 3. Two or more atoms joined together
- 6. The number of protons and electrons
- 7. One atom transfers electrons to another
- 9. Represents a compound
- 12. Electrons outside the nucleus
- 15. Atom with a neutral charge
- 16. A charged atom
- 17. When atoms share electrons
- 18. Chart displaying all the elements
- 20. Pure substance, a type of atom
Down
- 1. Outer most layer of orbitals
- 2. Represents atoms going into a reaction and coming out as a different atom/element
- 4. Process of forming and breaking bonds
- 5. Atom with a positive charge
- 8. Short representation of an element
- 10. The number of protons and neutrons
- 11. Atom with a negative charge
- 13. Atoms that have different numbers of neutrons than they should in nucleus
- 14. A compound formed by covalent bonds
- 19. The smallest unit of all matter