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Question 1 of 6
1
of 6
Match the term to its definition.
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subatomic particles with a mass of 1 and a positive charge
total number of protons and neutrons in an atom
atoms of an element with different number of neutrons
subatomic particles with a mass of 1 and no charge
protons
mass number
isotopes
neutrons
Two subatomic particles are in the nucleus and make up the mass of the atom. One of these cannot change in number as it defines the element while the other one can.
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