Atomic History
This scientist proposed the first "modern" theory of atoms.
Who is John Dalton?
The definition of atomic number.
What is the number of protons in the nucleus?
The charges of the three subatomic particles, protons, neutrons, and electrons, respectively.
What is +1, 0, -1?
Isotopes of the same element always have the same number of this subatomic particle?
What are protons?
This subatomic particle has a mass of 0 amu
What is the electron?
Rutherford discovered it.
What is the nucleus?
A representation of the nucleus of the atom which features the atomic number, mass number, and element symbol.
What is a nuclear symbol?
The number of protons contained in an atom of iron.
What is 26?
The definition of isotopes.
What are atoms of the same element with different masses (or a different number of neutrons)?
The two particles that make up nearly all the mass of the atom.
What are protons and neutrons?
The electron was discovered by this scientist in the early 1900s.
Who is JJ Thomson?
The definition of mass number
What is the number of protons plus neutrons in the nucleus of an atom?
Barium has an atomic number of 56 and this many electrons.
What is 56?
The mass (or mass number) along with this is needed to calculate average atomic mass.
What is percent abundance?
Where electrons are not allowed to be according to Bohr.
What is between energy levels (or between orbits)?
Schrodinger and others helped to develop the current model of the atom which bears this name.
What is the quantum-mechanical model?
What are orbitals?
The number of neutrons in an atom of Tin-118.
What is 68?
A Cesium ion with a +1 charge has an atomic number of 55 and a mass number of 133. This represents the number of protons, neutrons, and electrons in the ion.
What is 55 protons, 78 neutrons, and 54 electrons?
Most of the volume of the atom is this.
What is empty space?
Bohr's model of the atom featured electrons on set paths, which he termed this.
What are orbits?
The unit for average atomic mass.
What is amu (atomic mass units)?
The mass number of an atom of mercury with 122 neutrons.
What is 202?
The name for representing isotopes in a fashion like "Magnesium-24."
What is hyphen notation?
Rutherford described the nucleus with these three characteristics.