Across
1
Icy body with a tail near the sun
5
Magnetic metallic element
6
Measure of matter in an object
7
Solid with repeating atomic pattern
8
Path of a planet around the sun
9
Natural satellite of Earth
Down
2
Center of an atom or cell
3
Glass that splits light into spectrum
4
Smallest unit of an element
10
Hottest planet in solar system