Achemical change occurs when a. dissolved minerals freeze to form a crystal. b. ethanol is purified through distillation. c. salt deposits form from evaporated sea water. d. a leaf changes color from green to red.

D the rest are physical

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

hope it

false

because it does not have the potential to be entirely used up