What is a creative name for an element? (like oxygen, phosphorus) try to make it good

What are chlorofluorocarbons and what impact do they have on the atmosphere?

Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.

What is the angular momentum of the bar about the axle?