Question

D. Match the columns
Neutron
.. noble gas
b. electrically neutral
.. Negatively-charged ion
3. Positively-charged ion
nucleus
Central core of an atom
d. zinc sulphide
5. Neon
e cation
6. Valency
1. anion
whole number​

Answer 1

$\rm\huge\underline{Answer}$

the branch of science concerned with the substances of which matter is composed, the investigation of their properties and reactions, and the use of such reactions to form new substances.