横向
1
Substance with pH below 7
3
The Red Planet
4
Solid with repeating atomic pattern
6
Our home planet
7
Positive particle in nucleus
9
Curved glass that refracts light
10
Magnetic metallic element
纵向
2
Ball of burning gas in space
4
Icy body with a tail near the sun
5
Naturally occurring inorganic solid
6
Biological catalyst
8
Chemical element in table salt
11
Mass per unit volume