Molar Maths
Nuclear Symbols
Hyphen notation
Atomic Structure
Famous Scientists
100
The number of particles in one mole of iron (Fe).
What is 6.022 x 1023?
100
Sodium-22.
What is 2211Na?
100
The isotope with 14 protons and 14 neutrons.
What is Silicon-28?
100
The part of the atom with a mass number of zero.
What is an electron?
100
This Englishmen made a 5-part theory of the atom.
Who is John Dalton?
200
The number of particles in one mole of nickel (Ni).
What is 6.022 x 1023?
200
Calcium-41.
What is 4120Ca?
200
The isotope with 24 protons and 28 neutrons.
What is Chromium-52?
200
These particles make up cathode rays.
What are electrons?
200
He showed that cathode rays have mass and are negatively charged.
Who is J.J. Thomson?
300
The number of particles in 0.5 mol of lead (Pb).
What is 3.011 x 1023?
300
Oxygen-15.
What is 158O?
300
The number of neutrons in Zirconium-91.
What is 51?
300
These particles are the only negative part of the atom.
What are electrons?
300
He made a model of the atom, and said it was like Plum Pudding.
Who is J.J. Thomson?
400
The mass of 1.5 mol of oxygen (O).
What is 24 grams?
400
Gold-197.
What is 19779Au?
400
The isotope with 12 electrons and 11 neutrons.
What is Magnesium-23?
400
This particle takes up most of the space in the atom.
What is the electron?
400
He shot alpha particles at a gold foil and found the nucleus!
Who is Ernest Rutherford?
500
The mass of 2.5 mol of calcium (Ca).
What is 120.24 grams?
500
Tungsten-183
What is 18374W?
500
The isotope with 1 electron and 1 neutron.
What is Hydrogen-2?
500
This is the heaviest particle in the atom.
What is the neutron (very slightly!).
500
He measured the charge/mass ratio of the electron.
Who is Millikan?
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