1
Different substance or phases
2
Some appearance and composition
3
In a mixture the elements keep their ________?
4
Atoms of one or more elements bonded together
5
Cannot be broken down
6
to separate compounds they need a _________ reaction?
7
Different forms of the same element
8
It is made up of 2 or more elements
9
H2O stands for?
10
symbol of gold
