EXPLANATION
GS12. Which of the following is not a state of matter?
a) Solid
b) Liquid
c) Gas
d) Energy
ANSWER: d) Energy
EXPLANATION:
The answer is d) Energy.
Energy is not a state of matter. States of matter are the different forms that matter can exist in. Matter is anything that has mass and takes up space. Energy is the ability to do work. It is not a physical substance, and it does not have mass or take up space.
