Atomic History
Subatomic Particles
Isotopes
The Mole
NNSBM
100
His atomic theory was the first science-based theory about the atom.
Who is John Dalton
100
This is the subatomic particle that has a positive charge.
What is the proton?
100
Different isotopes of an element have different numbers of this subatomic particle.
What are neutrons?
100
There are 12 eggs in a dozen. There are this many eggs in a mole of eggs.
What is 6.02 x 10^23?
100
This is the number of pints in a quart.
What is 2?
200
Although his idea about matter was not really a theory, he was spot on about the existence of atoms.
Who is Democritus?
200
These are the only two subatomic particles that have a charge.
What are the proton and electron?
200
The mass number of the most common isotope of an element can be found by rounding this number to the nearest whole number.
What is the average atomic mass?
200
This is the unit of measure for molar mass.
What is the gram?
200
This is the chemical that makes leaves green.
What is chlorophyll?
300
The results of this famous experiment led Ernest Rutherford to theorize the existence of the nucleus.
What is the gold foil experiment?
300
These two particles have approximately equal masses and account for nearly all of an atom's mass.
What are protons and neutrons?
300
In an isotope's nuclear symbol, this is the larger number that is found superscript before the atomic symbol.
What is the mass number?
300
This number, measured in AMU's, is equal to an element's molar mass.
What is average atomic mass?
300
This is the symbol of the toxic metal that is the only metal that is a liquid at room temperature.
What is Hg?
400
He used a cathode ray tube to discover the negatively charged electron.
Who is J.J. Thomson?
400
The number of these subatomic particles are always equal in an atom.
What are protons and electrons?
400
This is the only property of an element that is different in atoms of different isotopes.
What is mass?
400
The number 6.02 x 10^23 bears his name.
Who is Avogadro?
400
Since 1946, his face has appeared on the "heads" side of the dime.
Who is Franklin Roosevelt?
500
This is the name of the positive plate in a cathode ray tube.
What is the anode?
500
This is the subatomic particle that is not a part of an alpha particle.
What is the electron?
500
This is the isotope of carbon that is commonly used for radiometric dating.
What is carbon-14?
500
These were Ronald Reagan's favorite candy.
What are jelly beans?
M
e
n
u