Across
1
Biological catalyst
4
The Red Planet
5
Magnetic metallic element
6
Icy body with a tail near the sun
Down
2
Nerve cell in the brain
3
Natural satellite of Earth
4
Measure of matter in an object
7
Form of thermal energy
Biological catalyst
The Red Planet
Magnetic metallic element
Icy body with a tail near the sun
Nerve cell in the brain
Natural satellite of Earth
Measure of matter in an object
Form of thermal energy