Water is described as a polar molecule because it has:
A) A partial positive and a partial negative end
B) two positive end
C) two negative ends
D) no charge

Which type of precipitation would most likely form when the surface air temperature is slightly below freezing and the air temperature increases as you move upward away from the ground?

If a gas has an initial pressure of 101kpa and a volume of 10l, then it expands to a volume of 20l, what is the new pressure?

Scuba divers use tanks of compressed air to them breathe. gases can be compressed because?