HONC 1234 Review

What is the molecular formula for water?

• H₂O

• CO₂

• NaCl

• C₆H₁₂O₆

Is this a correct dot diagram for oxygen (O)?

• True

• False

• Oxygen has 6 valence electrons

• Oxygen is a noble gas

What is the difference between a single, double, and triple bond?

• A single bond involves one pair of shared electrons, a double bond involves two pairs, and a triple bond involves three pairs.

• A single bond involves two pairs of shared electrons, a double bond involves three pairs, and a triple bond involves four pairs.

• A single bond involves one pair of shared electrons, a double bond involves one pair, and a triple bond involves two pairs.

• A single bond involves three pairs of shared electrons, a double bond involves one pair, and a triple bond involves two pairs.

What is the molecular formula for carbon dioxide?

• CO₂

• C₂O

• CO

• C₃O₂

What is the molecular formula for dihydrogen sulfide?

• H₂O

• H₂S

• SO₂

• H₂SO₄

What is the significance of the Octet Rule in chemistry?

• Atoms tend to bond in such a way that they have eight electrons in their valence shell.

• Atoms can have any number of electrons in their valence shell without affecting bonding.

• The Octet Rule states that atoms will always have a full outer shell of two electrons.

• The Octet Rule is only applicable to noble gases and has no relevance to other elements.

Define a covalent bond.

• A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.

• A covalent bond is a type of bond that occurs when atoms transfer electrons completely.

• A covalent bond is a bond formed by the attraction between oppositely charged ions.

• A covalent bond is a weak interaction between molecules that does not involve electron sharing.

How many bonds does Nitrogen (N) typically form?

• 1

• 2

• 3

• 4

According to the Octet Rule, how many valence electrons does Nitrogen (N) have?

• 2

• 4

• 5

• 6

What is the molecular formula for butane?

• C₄H₈

• C₄H₁₀

• C₃H₈

• C₅H₁₂