2.
Anything that has mass and takes up space
3.
The number of protons in an atom's nucleus
4.
Abbreviations for the names of elements
5.
A system of classifying the various elements
6.
Made when atoms join with other atoms
7.
An atom that has gained or lost an electron
8.
When the outermost shell is filled, an atom is
9.
Atoms joined by sharing electrons
10.
Type of reaction where molecules combine
11.
Horizontal rows that share the same number of shells
12.
Columns that share number of electrons in outer shell
13.
Share characteristics with both metals and nonmetals
14.
The language that many chemical symbols are derived from
