Why do gases exert pressure on the container? *
the gas particles hit each other.
the gas particles move quickly in all directions.
the gas particles hit the container wall.

What is the solubility of substance?

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

If two objects at different te,peraure are in contact with each other what happens to their temperature