CBA Review

Front

What is a polar bond?

Back

A polar bond is a type of covalent bond where electrons are not shared equally between two atoms, resulting in a partial positive charge on one atom and a partial negative charge on the other.

Front

Which molecule contains a polar bond?

Back

HBr (Hydrogen Bromide) contains a polar bond due to the difference in electronegativity between hydrogen and bromine.

Front

What is the shape of a molecule with four bonding pairs and no lone pairs?

Back

The shape is tetrahedral.

Front

What happens to electrons in cations?

Back

Cations lose electrons, becoming positively charged.

Front

What is the formula for Magnesium Hydroxide?

Back

The correct formula is Mg(OH)₂.

Front

How are ionic bonds formed?

Back

Ionic bonds are formed when electrons are transferred from one atom to another.

Front

What is an ionic compound?

Back

An ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding.

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

What is the difference between cations and anions?

Back

Cations are positively charged ions that lose electrons, while anions are negatively charged ions that gain electrons.

Front

What is the significance of the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full set of eight valence electrons, leading to greater stability.