Which form of energy is needed to change water from a liquid to a gas?
A B C D
heat mechanical chemical sound
Question: Which form of energy is needed to change water from a liquid to a gas?
(A) heat
(B) mechanical
(C) chemical
(D) sound

Answer: (A) heat
Answer: (D) sound
Question: Which form of energy is needed to change water from a liquid to a gas?
(A) heat
(B) mechanical
(C) chemical
(D) sound
Answer: (A) heat