Across
1
Disturbance that transfers energy
4
Unit of electric potential
5
Smallest unit of an element
6
Nerve cell in the brain
7
Element found in all living things
Down
2
Unit of force
3
Gas essential for breathing
7
Basic unit of life
8
Naturally occurring inorganic solid
9
Push or pull on an object
10
Chemical element in table salt
11
Ball of burning gas in space