I need a little help in this

Answer:
1. rigidity
2.rigidity
3.fluidity
4.fluidity
5. fluidity
6. fluidity
7.compresibility
8.compressibility
9.compressibility
1. Rigid
2. Compress
3. Compress
4. Fluid
5. Fluid
6. Fluid
7. Compress (or Fluid because if you compress oxygen together it creates water)
8. Compress
9. Compress