Hello there!
An Atom would be considered to be the smallest unit that would make up matter. If were to ever see a picture of an atom, they would consists of a proton, neutron, electron, and a nucleus. And all this would be called a Atom.
Your answer: Atom
The battery gives energy to the connected light and switch, and the switch controls the light.
The answer to your question is green
Answer:
144 u
Explanation:
The average atomic mass of carbon is approximately 12 u.
Multiply 12 x 12:
12 x 12 = 144