Across
- 3. An atom that has lost or gained an atom
- 7. The sum of protons and neutrons in the atom
- 8. Has a positive electrical charge
- 10. The number of protons and is equal to the amount of electrons an atom has
- 11. Makes up protons and neutrons
- 12. Where does the word atom come from and what does it mean in Greek?
- 14. Made up of multiple different elements chemically bound
Down
- 1. Orbits the atom and has a negative electrical charge
- 2. Developed the first theory of the atom
- 4. Has no electrical charge
- 5. Made out of the same type of atom chemically bound
- 6. Made by splitting an atom
- 9. Made up of atoms not chemically bound
- 13. Smallest particle of an element that can exist