A solid dissolves in a liquid when it mixes completely with the liquid. ... Things which dissolve are called solutes and the liquid in which they dissolve is called a solvent to form a solution
A change in the force of gravity on an object will affect its weight.
Sodium peroxide is the answer!
The answer is A because it does
Each atom will be attracted to both nuclei if the two atoms get close then the nuclei will repel each other