Vocab Crossword

2. Greek philosopher who called nature’s basic particle an atom
4. Bonding, Special type of dipole-dipole attraction that is the strongest of the intermolecular bonds
6. a force that results from one end of a molecule being positive and the other end being negative
10. the neutral particle in the nucleus of an atom
11. Forces, Short-range proton-neutron, proton-proton, and neutron-neutron forces that hold these particles together
13. Vertical columns on the periodic table
14. Proposed the “plum pudding” model and discovered the electron
16. the basic unit of a chemical element
19. Formed the atomic theory of the atom, said atoms were “hard little spheres”

1. Discovered the nucleus using his gold foil experiment
3. Dispersion Forces, Weakest of the intermolecular forces between two nonpolar molecules
5. Number, the number of protons in the nucleus and determines the chemical properties of an element
7. the negative particle that circles the nucleus
8. Cloud, Current explanation of where electrons might be found in an atom
9. Horizontal rows of the periodic table
11. A collection of protons and neutrons at the center of an atom
12. Molecular Theory, Theory that explains that as atoms speed up, they are more likely to be gases
15. the positive particle in the nucleus of an atom
17. Number, The total number of protons and neutrons in a nucleus
18. Used by scientists to explain something we can not see or understand