Unit 6 Test Review

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 in the molecule.

Front

What type of bond is formed when electrons are transferred from one atom to another?

Back

An ionic bond is formed when electrons are transferred from one atom to another.

Front

What type of bond is formed when two atoms share electrons?

Back

A covalent bond is formed when two atoms share electrons.

Front

How many valence electrons does hydrogen have?

Back

Hydrogen has 1 valence electron.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to form bonds in such a way that they have eight electrons in their valence shell, achieving a stable electron configuration.

Front

Which element is stable with only 2 valence electrons?

Back

Helium is stable with 2 valence electrons.

Front

What is the molecular formula for water?

Back

The molecular formula for water is H₂O.

Front

How many covalent bonds are present in a water molecule?

Back

There are 2 covalent bonds in a water molecule.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

Which element is most likely to form an ionic bond with magnesium?

Back

Elements like chlorine (Cl) or oxygen (O) are likely to form ionic bonds with magnesium.