Across
1
Precious yellow metallic element
4
Solid with repeating atomic pattern
6
Gas form of a liquid
7
Molten rock beneath Earth surface
9
Magnetic metallic element
10
Disturbance that transfers energy
11
Substance with pH above 7
Down
2
Path of a planet around the sun
3
Substance with pH below 7
5
Chemical element in table salt
8
Our home planet