横向
1
Mass per unit volume
5
Force that attracts objects together
6
Tectonic landmass section
9
Precious yellow metallic element
纵向
2
Measure of matter in an object
3
Icy body with a tail near the sun
4
Solid with repeating atomic pattern
7
Compound containing oxygen
8
Substance with pH below 7
10
Basic unit of life