Unit 4 Exam Review

Front

What is the charge of the Magnesium ion and why?

Back

The charge of the Magnesium ion is +2 because it loses two valence electrons.

Front

Is KCl an ionic or covalent compound?

Back

KCl is an ionic compound.

Front

What are the horizontal rows on the periodic table called?

Back

The horizontal rows on the periodic table are called periods, not groups or families.

Front

What is a lone pair of electrons?

Back

A lone pair of electrons refers to pairs of valence electrons that do not participate in bonding.

Front

What does it mean to balance the charges in ionic compounds?

Back

To balance the charges in ionic compounds means to make the positive charge of the cations equal to the negative charge of the anions.

Front

What is the definition of an ionic bond?

Back

An ionic bond is a type of chemical bond that occurs when electrons are transferred from one atom to another, resulting in the formation of charged ions.

Front

What is a covalent bond?

Back

A covalent bond is a type of chemical bond where two atoms share one or more pairs of electrons.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons.

Front

What is the difference between cations and anions?

Back

Cations are positively charged ions that result from losing electrons, while anions are negatively charged ions that result from gaining electrons.