Atoms & The Periodic Table Vocabulary

A positively charged subatomic particle that is found in the nucleus of an atom.

A negatively charged subatomic particle that is found in the space outside the nucleus.

A neutral subatomic particle that is found in the nucleus of the atom.

Where the protons and neutrons are located.

Equals the number of protons in an atom of an element. - atomic_____.

The sum of the protons and neutrons in the nucleus of an atom: atomic _____.

Elements that have the same atomic number but different mass numbers because they have different numbers of neutrons.

An electron in an atom can move from one energy ______ to another when the atom gains or loses energy.

The location of the electrons(s).

Measures the relative strength with which the atoms of the element attract valence electrons in a chemical bond.

The _______ energy is qualitatively defined as the amount of energy required to remove the most loosely bound electron, the valence electron, of an isolated gaseous atom to form a cation.

A region of space around the nucleus where an electron is likely to be found.

The arrangement of electrons in the orbitals of an atom is known as the electron _________.

When all the electrons in an atom have the lowest possible energies - known as the _____ state.

A system of knowledge and the methods you use to find that knowledge.