Across
1
Absolute temperature scale unit
3
Solid with repeating atomic pattern
5
Our home planet
10
Biological catalyst
11
Glass that splits light into spectrum
12
Second lightest element
13
Chemical element in table salt
Down
2
Basic unit of life
3
Reddish electrical conductor
4
Curved glass that refracts light
6
Amplified beam of light
7
Force that attracts objects together
8
Smallest unit of an element
9
Form of thermal energy