Unit 5&6 Test Review

Front

What is the proper chemical formula for combining Al³⁺ and Cl^-?

Back

AlCl₃ is the correct formula, as it balances the charges of aluminum and chlorine.

Front

What does VSEPR theory help determine?

Back

VSEPR theory is used to determine the shape and geometry of molecules based on the number of bonding and lone pairs of electrons.

Front

Is the dot diagram for sodium (Na) correct?

Back

True, the dot diagram for sodium accurately represents its valence electrons.

Front

If electrons are shared equally in a bond, what type of bond is formed?

Back

A non-polar covalent bond is formed when electrons are shared equally.

Front

A diatomic molecule like O₂ is always _______ because electrons are shared ________.

Back

nonpolar; equally.

Front

What is a covalent bond?

Back

A covalent bond is a chemical bond formed by the sharing of electron pairs between atoms.

Front

Define ionic bond.

Back

An ionic bond is a type of chemical bond that involves the electrostatic attraction between oppositely charged ions.

Front

What is the significance of lone pairs in molecular geometry?

Back

Lone pairs affect the shape of molecules by repelling bonding pairs of electrons, influencing the overall geometry.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to form bonds until they are surrounded by eight valence electrons.

Front

What is a polar covalent bond?

Back

A polar covalent bond is formed when electrons are shared unequally between two atoms, resulting in a molecule with a dipole moment.