Which sentence is true?
a). a physical change cannot be reversed.
b). a physical change causes new material
c). you can reverse a physical change
d). a change in state is not a physical change

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.

How does the motion of particles in a gas change as the gas cools

Areaction in which products can react to re-form reactants is