Chapter 2: The Chemistry of Life Vocab Flashcards

Front

Atom

Back

The basic unit of matter.

Front

Nucleus

Back

The center of the atom; formed by strong forces between protons and neutrons; location of genetic material.

Front

Electron

Back

The negatively charged particle in an atom.

Front

Element

Back

A pure substance that consists entirely of one type of atom.

Front

Isotope

Back

Atoms of the same element that differ in the number of neutrons.

Front

Compound

Back

A substance formed by the chemical combination of two or more elements in definite proportions.

Front

Ionic Bond

Back

Formed when one or more electrons are transferred from one atom to another.

Front

Ion

Back

A positively or negatively charged atom.

Front

Covalent Bond

Back

Formed when atoms share electrons.

Front

Molecule

Back

The structure that results when atoms are joined together by covalent bonds.