Across
1
The Red Planet
3
Compound containing oxygen
4
Mass per unit volume
Down
1
Measure of matter in an object
2
Reddish electrical conductor
5
Curved glass that refracts light
6
Infectious microscopic agent
7
Second lightest element
The Red Planet
Compound containing oxygen
Mass per unit volume
Measure of matter in an object
Reddish electrical conductor
Curved glass that refracts light
Infectious microscopic agent
Second lightest element