The location of most of the mass of the atom.
What is the nucleus?
The number of protons, neutrons, and electrons based on this atomic notation:
2713 Al
What is 13 protons, 14 neutrons, 13 electrons?
Subatomic particle with a positive charge
What is the proton?
The sum of the number of protons and number of neutrons.
What is mass number?
The components of the atom's nucleus.
What are protons and neutrons?
Name of these types of atoms:

What are isotopes?
Subatomic particle with a negative charge
What is the electron?
The number that defines the element (equal to the number of protons)
What is atomic number?
Location of the electrons in the atom
What is the orbits/shells or outside the nucleus?
The number of protons, neutrons, and electrons based on this atomic notation:
4020Ca+2
What is 20 protons, 20 neutrons, 18 electrons?
Subatomic particle with no charge
What is a neutron?
An atom with the same number of protons and electrons
What is a neutral atom?
The number of protons, neutrons, and electrons based on this diagram:

What are 3 protons, 4 neutrons, and 3 electrons?
The number of protons, neutrons, and electrons based on this atomic notation:
3115P-3
What is 15 protons, 16 neutrons, and 18 electrons?
The lightest subatomic particle (mass = ~0 amu)
What is the electron?
An atom with a net charge due to the loss or gain of one or more electrons
What is an ion?
The mass number based on this diagram:
What is 8 amu?
The atomic notation for an atom with 8 protons, 9 neutrons, and 10 electrons
178O-2
The subatomic particles with mass (mass = 1 amu)
What are the protons and neutrons?
Atoms that have the same number of protons but different number of neutrons
What are isotopes?