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Science: Chemistry Quiz

A ____ is a subatomic particle with no electric charge. catalyst
An ____ consists of only one type of atom. cation
A group of atoms held together by covalent bonds is a ____. electron
An ____ is subatomic particle with a negative charge. element
Any atom or molecule that has a charge is an ____. ion
Diamond is the hardest naturally occurring ____ on Earth. mineral
A positively charged ion is called a ____. molecule
A ____ increases the rate of a chemical reaction. neutron