Across
1
Smallest unit of an element
3
Absolute temperature scale unit
4
The Red Planet
6
Naturally occurring inorganic solid
8
Ball of burning gas in space
Down
2
Chemical element in table salt
5
Second lightest element
7
Fourth state of matter
Smallest unit of an element
Absolute temperature scale unit
The Red Planet
Naturally occurring inorganic solid
Ball of burning gas in space
Chemical element in table salt
Second lightest element
Fourth state of matter