Chemistry

3. A measure of the height of the crests or the depths of the troughs on a wave.
6. A covalent bond in which the electrons are shared unequally between atoms involved.
8. The total number of neutrons and protons in an atom.
10. The electrons that exist farthest from an atom's nucleus.
12. rule Most atoms strive to attain 8 valence electrons.

1. A covalent bond in which the electrons are shared equally between the atoms involved.
2. The lowest possible energy state for a given substance.
4. A covalent molecule that has an imbalance in the distribution of electrons throughout the whole molecule.
5. The number of wave crests that pass a given point each second.
7. A negatively charged ion.
9. A positvely charged ion.
11. A covalent molecule in which the electrons are evenly distributed.