Subatomic Particles
Founding Scientists
Structure
Calculating Particles
Nuclear
100
These comprise an atom's nucleus and gives an atom most of its mass.
What are neutrons and protons?
100
This scientist discovered the proton and the nucleus.
Who is Rutherford?
100
This is the center or core of the atom
What is the nucleus?
100
The number of protons if the atomic number is 8 and mass number is 16.
What is 8?
100
Electromagnetic energy that is emitted from a nuclear reaction
What is gamma ( gamma ) radiation
200
The atomic number tells us this about an element
What is the number of protons and electrons?
200
This Greek scientist believed atoms were indivisible and referred to them as "atomos".
Who is Democritus?
200
This contributes to all of the atom's total mass
What are the protons and neutrons, or nucleus?
200
The number of electrons in Aluminum
What is 13?
200
The time is takes for half of a sample of radioactive isotopes to decay
What is half-life
300
The total number of protons and neutrons in an atom.
What is the atomic mass or mass number?
300
This scientist determined that electrons travel around the nucleus in specific shells or orbitals
Who is Bohr?
300
This particle has no charge
What is the neutron?
300
The number of neutrons in an Argon atom.
What is 22?
300
Atoms that are known for having excess nuclear energy and for being unstable
What are radioactive isotopes
400
The smallest particle in an atom
What is an electron
400
This scientist discovered the neutron.
Who is Chadwick?
400
What is the charge of the proton?
What is positive?
400
The mass number of Arsenic if it has 33 protons and 42 neutrons.
What is 75?
400
The spontaneous emitting of 2p+ and 2n0
What is an alpha (alpha) particle
500
This is the area where the electrons continually move around
What is the electron cloud?
500
This scientist proposed several important ideas, including that all atoms of an element are the same.
Who is Dalton?
500
What is the overall charge of the nucleus?
What is positive?
500
The number of protons, neutrons, and electrons in Nickel.
What is 28 protons, 31 neutrons, and 28 electrons?
500
Type of nuclear reaction shown
What is nuclear fission