This is the number of protons in the nucleus of an atom.
What is atomic number?
100
This is the basic unit of a chemical element.
What is an atom?
100
This is a state of matter where the particles are located so close to each other that the volume and shape is relatively stable.
What is solid?
100
These are the actual or potential patterns of electrons in an atom.
What is an orbital?
100
This principle states that lower energy levels have to be full before electrons can fill higher energy levels.
What is Aufbau Principle?
200
This is the average mass of all the isotopes.
What is atomic mass?
200
These cannot be broken down further and each one is determined by the number of protons the atoms have.
What is an element?
200
This state of matter has a defined volume, but not a defined shape as the particles are more spread out then solids but more tightly placed than gas.
What is a liquid?
200
This rule states that every orbital in a sublevel must have at least one electron before the electrons can double in one orbital. It also states that single electrons in the sublevel must have the same spin.
What is Hund's Rule?
200
This is the name of the horizontal row on the periodic table.
What is a period?
300
This determines location on the periodic table and chemical properties.
What are the number of protons in an atom?
300
These conduct electricity and heat very well.
What is a metal?
300
These are electricity semiconductors. They are the intermediate between a nonmetal and a metal.
What is a metalloid?
300
This principle states that two electrons in one orbital must have opposite spins and that orbitals can only have two electrons at most .
What is Pauli Exclusion Principle?
300
These go left and right on the periodic table. If a column goes up and down, this goes left and right.
What is a row?
400
This is the number of protons and neutrons in an atom.
What is mass number?
400
These are elements that are not liquid or solid. They are usually denoted in a different color or font on the periodic table.
What is a gas?
400
This is the the principal quantum number associated with the period of the element or the level.
What is the principal energy level?
400
This is the angular movement of an electron.
What is spin?
400
These are the vertical columns on a periodic table.
What is a family?
500
These are the forms of an element that have a different mass numbers as they have a different number of neutrons, but the same amount of protons.
What is an isotope?
500
These elements do not conduct electricity or heat very well.
What is a non-metal?
500
These are the energy levels defined by the quantum theory.
What is a sublevel?
500
These are a set of values that describes the state of an electron including its distance from the nucleus, the orientation and type of orbital where it is likely to be found, and its spin.
What are quantum numbers?
500
This is a column or multiple columns in a periodic table with elements that have the same number of electrons in the outer shell.