Why a gas, at constant pressure, increases greatly in volume when it is gently heated but a solid does not

Explanation:

This is because gas particles are free to move as they are not held in place by strong molecular forces while particles in a solid are

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.