Unit 3 Chemistry Notes

These flashcards cover key vocabulary terms and definitions from Unit 3 chemistry notes, including concepts related to atomic structure, bonding, and properties of elements.

Ionization Energy

The energy required to remove an electron from an atom.

Electronegativity

The ability of an atom to attract electrons when the atom is in a compound.

Metallic Character

Refers to the level an atom behaves like a metal.

Atomic Radius

One-half the distance between the nuclei of two atoms of the same element when atoms are joined.

Electron Affinity

The amount of energy released when an atom gains an electron.

Cation

A positively charged ion.

Anion

A negatively charged ion.

Ionic Bonding

The electrostatic interaction between metal (cation) and non-metal (anion) due to opposite charges.

Octet Rule

When forming compounds, atoms tend to achieve the electron configuration of noble gases.

Ionic Compounds

Compounds formed from two charged species, typically a metal and a non-metal.