Across
1
Substance with pH below 7
4
Reddish electrical conductor
5
The Red Planet
7
Our home planet
8
Positive particle in nucleus
Down
2
Compound containing oxygen
3
Gas form of a liquid
6
Gas essential for breathing
Substance with pH below 7
Reddish electrical conductor
The Red Planet
Our home planet
Positive particle in nucleus
Compound containing oxygen
Gas form of a liquid
Gas essential for breathing