Chapter 2 Vocabulary Quiz

The basic unit of matter

• atom

• element

• compound

• ion

Found at the center of the atom that contains proteins and neutrons.

• acid

• base

• nucleus

• element

A negatively charged particle that orbits the nucleus.

• proton

• electron

• neutron

• ion

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

• atom

• element

• compound

• ion

Atoms of the same kind of element that differ in the number of neutrons they contain.

• atom

• element

• compound

• isotope

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

• atom

• element

• compound

• ion

The bond formed when one or more electrons are transferred from one atom to another.

• ionic bond

• covalent bond

• compound

• hydrogen bond

The bond formed when electrons are shared by atoms instead of being transferred.

• ionic bond

• covalent bond

• compound

• hydrogen bond

The structure that forms when atoms are joined by covalent bonds.

• compound

• molecule

• ion

• isotope

Positively and negatively charged atoms.

• ion

• molecule

• proton

• electron