Across
- 4. makes the periodic table and has an atom,proton,neutron,and electron
- 7. has 2 or more atoms
- 9. proton and neutrons added together
- 10. has a negative charge
Down
- 1. made up of protons and neutrons
- 2. gives a neutral charge
- 3. shows how many valence electrons a atoms have
- 5. a board the shows all the elements
- 6. shows how many energy levels an element has
- 8. decides the element