A positively charged ion is called a ____. |
atom |
A group of atoms held together by covalent bonds is a ____. |
catalyst |
Any atom or molecule that has a charge is an ____. |
cation |
A ____ is a subatomic particle with no electric charge. |
compound |
A ____ contains atoms of at least two different elements. |
ion |
A ____ increases the rate of a chemical reaction. |
molecule |
A ____ is subatomic particle with a positive charge. |
neutron |
The basic unit of an element is an ____. |
proton |