AChem - Unit 7 - Vocabulary

Gives the actual number of atoms of each element in a molecule of a compound.

• structural formula
• molecular formula
• nonpolar covalent bond
• formula unit

Molecule or a part of a molecule that contains both positively and negatively charged regions.

• nonpolar covalent bond
• valence electrons
• dipole
• polyatomic ion

States that atoms lose, gain or share electrons in order to acquire a full set of eight valence electrons.

• octet rule
• VSEPR
• electron dot structure
• diatomic molecule

A bond formed when two atoms share a pair of electrons.

• double covalent bond
• triple covalent bond
• ionic bond
• single covalent bond

Bond formed by a transfer of one or more electrons from a metal to a nonmetal.

• covalent bond
• ionic bond
• nonpolar covalent bond
• polar covalent bond

A bond angle of 109.5 degrees that results when a central atom forms four bonds directed toward the center of a regular tetrahedron.

• trigonal planar angle
• tetrahedral angle
• VSEPR angle
• linear bond angle

A pair of valence electrons that is not shared between atoms.

• valence electrons
• polyatomic ion
• resonance structure
• unshared pair

Formula that gives the elements in a compound and the ratio of atoms.

• chemical formula
• molecular compound
• structural formula
• electron dot structure

A bond in which two atoms share two pairs of electrons.

• double covalent bond
• single covalent bond
• triple covalent bond
• ionic bond

Molecule with an unequal distribution of charge, resulting in the molecule having a positive end and a negative end.

• ionic compound
• nonpolar molecule
• resonance structure
• polar molecule