Across
1
Substance with pH above 7
2
Reddish electrical conductor
4
Tectonic landmass section
5
Curved glass that refracts light
8
Naturally occurring inorganic solid
10
Path of a planet around the sun
Down
2
Solid with repeating atomic pattern
3
Our home planet
4
Particle of light
6
Center of an atom or cell
7
Unit of heredity
9
The Red Planet