Which of the following statements are true? Check all that apply.

Question

A.An atom is always found in the exact same position.

B.The faster atoms are moving, the less kinetic energy they have.

C.Atoms are always moving.
D.Atoms have kinetic energy.

Answer 1

Hi Arleaha,

 

It may not seem like it because we're too big to see the small things, but atoms almost everywhere are constantly moving. The atoms in your desk lamp are jiggling around, the atoms in the air are swirling about your head, and the atoms in a glass of water are all bumping into each other. All the time.

 

There's only one exception to this rule, but you guys probably haven't learned about it yet. So, we'll ignore it for now. But if you're curious, the exception has something to do with an invention called a superconductor.

 

Anyway, atoms are constantly moving, so C is true.

 

Next, we have to think about what kinetic energy is.

 

Memorize this: Kinetic energy is the energy of motion. If something's moving, then it's got kinetic energy. And the faster something is moving, the more kinetic energy it has.

 

The rest of the problem should be solvable by now.

 

Best of luck! :)