Across
1
Smallest unit of an element
3
Tectonic landmass section
5
Path of a planet around the sun
6
Particle of light
8
Substance with pH below 7
Down
2
Unit of force
4
Icy body with a tail near the sun
7
Element found in all living things
Smallest unit of an element
Tectonic landmass section
Path of a planet around the sun
Particle of light
Substance with pH below 7
Unit of force
Icy body with a tail near the sun
Element found in all living things