What happens to the molecules of a gas when the gas is heated? A.
The gas becomes a liquid.

B.
The molecules collide less frequently.

C.
No change occurs with regard to the molecules.

D.
The average speed of the molecules increases.

the correct answer is D because the heat causes the molecules to speed up

they include patterns; cause and effect; scale, proportion, and quantity; systems and system models; energy and matter; structure and function; and stability and change.

can i get the brainiest answer

i answered it first

i wish i could but this one is weird give me abc and i can solve it.