横向
1
Unit of electric potential
3
Biological catalyst
6
Second lightest element
8
Element found in all living things
纵向
2
Compound containing oxygen
4
Tectonic landmass section
5
Smallest unit of an element
7
Fourth state of matter
9
Our home planet
Unit of electric potential
Biological catalyst
Second lightest element
Element found in all living things
Compound containing oxygen
Tectonic landmass section
Smallest unit of an element
Fourth state of matter
Our home planet