1
Q
atoms
A
particle of matter that uniquely defines a chemical element
2
Q
element
A
chemical substances that cannot be broken into any other
3
Q
compound
A
2+ elements bonded together
4
Q
molecule
A
2+ atoms bonded together
5
Q
Ionic bonds
A
bond between negative and positive
6
Q
covalent bonds
A
each electron in more attached to nucleus of others than its own
7
Q
acids
A
donates hydrogen when put in water
8
Q
bases
A
gives off hydrogen ions when put in water
9
Q
pH scale
A
measure of concentration of H-ions in a solution
10
Q
A
