They have two or eight electrons in their valence shell. They do not gain, lose or share electrons.
Answer:
I'm pretty sure they both relate with matter
<span>A fat molecule is less soluble in water because it has three non-polar fatty acids and no polar or charged head like a phospholipid has.
Phospholipids have a polar region on one side; since water is a polar molecule, it can solubilize the phospholipids. Fats tend to be nonpolar and do not dissolve in water.</span>
The law conservation of mass, because part of the mass can be converted into energy
also, the elements are changing during nuclear reactions, new elements are formed