Across
1
Precious yellow metallic element
3
Smallest unit of an element
4
Magnetic metallic element
6
Second lightest element
8
Force that attracts objects together
10
Push or pull on an object
11
Amplified beam of light
12
Glass that splits light into spectrum
13
Tissue that contracts for movement
Down
2
Naturally occurring inorganic solid
5
Gas essential for breathing
6
Form of thermal energy
7
Reddish electrical conductor
9
Ball of burning gas in space
14
Group of similar cells