Across
1
Unit of force
3
Substance with pH below 7
4
Fourth state of matter
6
Basic unit of life
7
Ball of burning gas in space
Down
2
Naturally occurring inorganic solid
5
The Red Planet
8
Smallest unit of an element
Unit of force
Substance with pH below 7
Fourth state of matter
Basic unit of life
Ball of burning gas in space
Naturally occurring inorganic solid
The Red Planet
Smallest unit of an element