Across
1
Biological catalyst
4
Magnetic metallic element
7
Substance with pH above 7
9
Second lightest element
Down
2
Form of thermal energy
3
Push or pull on an object
5
The Red Planet
6
Substance with pH below 7
8
Smallest unit of an element
Biological catalyst
Magnetic metallic element
Substance with pH above 7
Second lightest element
Form of thermal energy
Push or pull on an object
The Red Planet
Substance with pH below 7
Smallest unit of an element