Introductory Chemistry and Half-Life Flashcards

Vocabulary flashcards covering key terms from the lecture, including subatomic concepts, isotopes, half-life properties, chemical bonds, and ions.

Atom

The smallest unit of matter that still retains the properties of an element.

Stable Isotope

An isotope that does not change or become affected by the surrounding environment.

Radioactive Isotope

An isotope that decays continuously over time.

Half Life Value

The point at which a substance reaches $50\%$ of its startup volume.

ATP

Adenosine triphosphate, which gives energy to human beings.

Double Bond

A chemical bond formed by the sharing of two pairs of valence electrons (four electrons total).

Single Bond

A chemical bond formed by the sharing of one pair of valence electrons (two electrons total).

Cation

An atom with a positive charge formed when it loses an electron.

Anion

An atom with a negative charge formed when it gains an electron.