Across
1
The Red Planet
3
Compound containing oxygen
4
Hottest planet in solar system
8
Reddish electrical conductor
10
Our home planet
13
Gas form of a liquid
Down
2
Center of an atom or cell
5
Positive particle in nucleus
6
Group of similar cells
7
Disturbance that transfers energy
9
Smallest unit of an element
11
Precious yellow metallic element
12
Blocking of light by a celestial body