Hi there.
I believe you're looking for <u /><em>quantum;</em><em> </em>the small packets of energy emitted from an object.
Hope this helped!
Answer: b) microwave energy causes water molecules to heat and vaporise, causing the expansion of the kernels, sound and movement which are all due to mechanical energy
Explanation: as above
Oxygen gas released into atmosphere
it is affected<span> by the arrangement of electrons, but doesn't describe it's arrangement. The </span>shape<span> of a </span>molecule<span> is how the outside atoms are arranged around the central atom. The lone pairs of electrons </span>affect<span> this arrangement, but is not part of it.</span>