1
Number of protons in an element.
2
Subatomic particle with a negative charge.
3
Mixture made up of multiple substances
4
Subatomic particle with no charge.
5
the center of an atom, made of protons and neutrons
6
The amount of mass per volume
7
Subatomic particle with a positive charge.
8
State of matter that takes the shape of its container.
9
State of matter similar to gas.
10
State of matter with a definite shape and volume.
11
smallest form of a chemical element
12
Molecule that has gained or lost electrons
13
state of matter with no definite shape or volume
