横向
1
Positive particle in nucleus
4
Solid with repeating atomic pattern
5
Second lightest element
8
Compound containing oxygen
10
Unit of force
11
Natural satellite of Earth
纵向
2
Smallest unit of an element
3
Preserved remains of ancient life
6
Particle of light
7
Push or pull on an object
9
Measure of matter in an object
12
Curved glass that refracts light