Is there a state of matter in which the molecules are not moving at all? What is this phenomenon known as?

No

Explanation:

There is no possible physical way for there to be an object without the molecules moving. There is a temperature called absolute zero,* however, there will always be some form of heat to touch everything, so nothing will ever be "frozen solid."

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.