1. Introduction to the Atom

4. Has a positively charged center NUCLEUS

5. Negatively charged electrons orbit in fixed paths around the nucleus

7. Electrons can have only specific amounts of energy

8. Electrons orbit in a flat layer.

10. The cloud only symbolizes where the electrons are most likely to be found.

13. +1 charge

14. Same size as the neutron

16. No charge

17. Same size as the proton

19. -1 charge

20. Smaller than either the proton or the neutron