Across
1
Precious yellow metallic element
3
Substance with pH below 7
4
Amplified beam of light
6
Solid with repeating atomic pattern
7
Element found in all living things
9
Chemical element in table salt
Down
1
Force that attracts objects together
2
Fourth state of matter
5
Hottest planet in solar system
8
The Red Planet
10
Measure of matter in an object