True but no one know Exactly how many stars there are
Answer:
As the molecules of a liquid are cooled they slow down. As the molecules slow down they take up less volume. Taking up less room because of the molecules lower energy causes the liquid to contract.
Explanation:
Answer:
A) Electrons
A) 16-8=8 so it'd be 8
(Relative atomic mass - atomic number = neutrons)
A) 12
Same thing as last one.
31-15=16 ( did you type the wrong options if not then huh?)
Explanation: