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Atoms and Isotopes

The Assessment


Akoranga Tahi: Whāinga Ako

  1. Define the terms proton, neutron, electron, nucleon, atomic mass, atomic number and isotope.

Question: What is everything made up of?




In the modern day, we now know that everything is made up of about 119 elements.

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Question: What makes the elements different from each other?


We know that each element is made up of a unique type atom


Atoms


Rutherford’s Atomic Structure



Source


Pātai Tahi

Give the number of protons, neutrons, electrons and nucleons for oxygen, sodium, aluminium and copper.

NucleonsProtonsNeutronsElectrons
Oxygen
Sodium
Aluminium
Copper

Whakatika Tahi

NucleonsProtonsNeutronsElectrons
Oxygen16888
Sodium23111211
Aluminium27131413
Copper64293529

Atomic and Mass Numbers


Now add the atomic and mass numbers to oxygen, sodium, aluminium and copper.

NucleonsProtonsNeutronsElectrons
Oxygen16888
Sodium23111211
Aluminium27131413
Copper64293529

Atoms vs Ions


Source


Isotopes


Pātai Rua

For Carbon-12, Carbon-13 and Carbon-14, give the number of protons, neutrons and electrons.

NucleonsProtonsNeutronsElectrons
Carbon-12
Carbon-13
Carbon-14

Whakatika Rua

For Carbon-12, Carbon-13 and Carbon-14, give the number of protons, neutrons and electrons.

NucleonsProtonsNeutronsElectrons
Carbon-1212666
Carbon-1312676
Carbon-1412686