Hard Science Crossword
Puzzle #24 • 15×15 grid
1
2
6
9
10
6
3
9
10
6
8
9
10
6
7
8
9
10
6
4
7
8
9
10
7
8
9
10
7
8
10
5
7
8
10
Across
1.Gas we breathe
2.Smallest unit of matter
3.Mountain that erupts lava
4.Group of bonded atoms
5.Earth's natural satellite
Down
6.Vibration traveling through air
7.H2O liquid
8.Element in all life
9.Preserved ancient remains
10.Negatively charged particle