横向
1
Smallest unit of an element
4
Solid with repeating atomic pattern
5
Hottest planet in solar system
6
Amplified beam of light
11
Molten rock beneath Earth surface
12
Fourth state of matter
纵向
2
Push or pull on an object
3
Ball of burning gas in space
7
Second lightest element
8
Element found in all living things
9
Substance with pH below 7
10
Particle of light