Neutrons are neutral particles, so they don't change the charge of an atom. They do however, change the atomic mass, so the answer would be a. mass.
Answer:
C) They are not made of matter.
Explanation:
Case in which protons are inside of neutrons doesn't exist.
<span>Their orbitals are completely filled</span>
A pure substance has a constant composition and cannot be separated into simpler substances by physical means. There are two types of pure substances: elements and compounds. Elements: are pure substances made up of only l type of atom. Atoms of the same element are identical in properties.
