chemistry vocab

2. table of the elements, arranges the chemical elements into rows and columns.
4. subatomic particle with a positive electric charge.
6. Atoms gain or lose electrons to have 8 outer electrons in the outer energy shell.
8. subatomic particle which has a neutral charge.
10. property that describes the tendency of an atom or a functional group to attract electrons toward itself.
11. ions that are negatively charged.
12. each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei.

1. The shortest distance between the atom's nuclei and the outermost shell of the atom.
3. a measure of the capability of an element to enter into chemical reactions requiring ion formation or donation of electrons.
5. Positively charged ion.
7. equivalent to the number of protons and neutrons in the atom.
9. a stable subatomic particle with a charge of negative electricity.