Across
1
Positive particle in nucleus
4
Hottest planet in solar system
5
Preserved remains of ancient life
6
Solid with repeating atomic pattern
Down
1
Fourth state of matter
2
Form of thermal energy
3
Unit of force
6
Element found in all living things
7
Glass that splits light into spectrum
8
Particle of light
9
Path of a planet around the sun
10
Substance with pH above 7
11
Blocking of light by a celestial body