Across
1
Absolute temperature scale unit
4
Our home planet
5
Measure of matter in an object
6
Second lightest element
7
Smallest unit of an element
8
Nerve cell in the brain
Down
2
Compound containing oxygen
3
Unit of force
5
The Red Planet
Absolute temperature scale unit
Our home planet
Measure of matter in an object
Second lightest element
Smallest unit of an element
Nerve cell in the brain
Compound containing oxygen
Unit of force
The Red Planet