Question

1.Energy cannot be created or destroyed.

True
False


2.When energy changes form, some of the energy changes to heat.

True
False

3.When molecules move around, they are using energy and producing heat.

True
False


4.The First Law of Thermodynamics shows us that energy can change form, but not disappear.

True
False


5.Heat that is released as energy changes form and can usually be used by us in a different way.

True
False

6.The total amount of energy always decreases even in an ideal system with no friction or air resistance.

True
False