Inside Atoms Flashcards
1
Q
sub-atomic particles
A
The particles that make up an atom
2
Q
proton
A
Tiny sub-atomic particle with a positive charge that is found in the nucleus of an atom. The relative mass of a proton is 1
3
Q
neutron
A
Tiny sub-atomic particle with no charge that is found in the nucleus of an atom. The relative mass of a neutron is 1
4
Q
electron
A
Tiny sub-atomic particle with a negative charge that flows through a wire to create an electric current
5
Q
nucleus
A
Central part of an atom, made up of protons and neutrons
6
Q
nucleons
A
Protons and neutrons.
7
Q
nucleon number
A
The number of protons and neutrons in an atom
8
Q
mass number
A
The total number of proton and neutrons in an atom
9
Q
isotopes
A
Atoms of the same element that have different numbers of neutrons
