横向
1
Unit of heredity
3
Solid with repeating atomic pattern
4
Icy body with a tail near the sun
7
Naturally occurring inorganic solid
9
Smallest unit of an element
10
Ball of burning gas in space
纵向
2
Positive particle in nucleus
5
Molten rock beneath Earth surface
6
Element found in all living things
7
Measure of matter in an object
8
Glass that splits light into spectrum