What happens to an atom if we lose or gain protons, neutrons, or electrons? Use the words in the word bank to complete this
worksheet.
Anion )
Chlorine
Sulfur-31
Sulfur-33
Cation (+)
lons
Isotopes
Phosphorous
1
One less
2
Sulfur - 32
P-16
N = 16
One more
proton
proton
One less
neutron
One less
electron
3
One more
electron
One more
neutron
6
4.
7
8
5
Atoms with different
numbers of neutrons
Atoms that have
lost or gained
electrons