Chapter 4 Exam (Intro to Compounds)

Front

What is a compound?

Back

A compound is a substance formed when two or more elements chemically bond together.

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

How many valence electrons does sulfur have?

Back

Sulfur has 6 valence electrons.

Front

What is a Lewis dot structure?

Back

A Lewis dot structure is a diagram that shows the bonding between atoms of a molecule and the lone pairs of electrons that may exist.

Front

What happens to magnesium when it forms a compound?

Back

Magnesium loses 2 electrons to achieve a stable electron configuration.

Front

Which element gains electrons to form anions?

Back

Nonmetals, such as sulfur and iodine, gain electrons to form anions.

Front

What is the charge of a magnesium ion after it loses electrons?

Back

The charge of a magnesium ion after losing 2 electrons is +2.

Front

How many hydrogen atoms are in a water molecule (H2O)?

Back

There are 2 hydrogen atoms in a water molecule.

Front

What is the significance of the number of valence electrons in chemical bonding?

Back

The number of valence electrons determines how an atom will bond with other atoms.

Front

What is the electron configuration of germanium (Ge)?

Back

The electron configuration of germanium is [Ar] 3d10 4s2 4p2.