Q: Q: Clouds are formed from what? A: | OPTIONS:
- ice crystals
- snow flakes
- dust particles
- water droplets
A: water droplets

Q: Q: What encloses the border of animal cells? A: | OPTIONS:
- Jacket membrane
- dust membrane
- cells membrane
- plasma membrane
A: plasma membrane

Q: Q: What do you get by multiplying volume by the density of water? A: | OPTIONS:
- velocity of water
- temperature of water
- weight of water
- mass of water
A: mass of water

Q: Q: What are the attractive forces that occur between polar molecules called? A: | OPTIONS:
- induced-dipole forces
- particle - dipole forces
- ion-dipole forces
- dipole-dipole forces
A: dipole-dipole forces