Across
1
Naturally occurring inorganic solid
6
Infectious microscopic agent
7
Path of a planet around the sun
9
Particle of light
Down
2
Magnetic metallic element
3
Ball of burning gas in space
4
Our home planet
5
Chemical element in table salt
8
Glass that splits light into spectrum
10
Curved glass that refracts light
11
Substance with pH below 7