10 chemistry multiple choice

December 6, 2021/in Uncategorized /by Liz

QUESTION 1

The molecule CO₂ is polar.

TRUE

FALSE

2 points

QUESTION 2

The molecule SCl₆ is polar.

TRUE

FALSE

2 points

QUESTION 3

Which of the following molecules or ions is polar?

3 points

QUESTION 4

Which of the following molecules is nonpolar?

3 points

QUESTION 5

London dispersion forces are relatively weak forces created when the electron clouds of two neighboring atoms or nonpolar molecules come near one another.

TRUE

FALSE

2 points

QUESTION 6

Which of the following types of intermolecular forces is caused by an unequal distribution of electrons induced temporarily in a nonpolar molecule?

London dispersion

Hydrogen bonding

Dipole-dipole bonding

None of the above

3 points

QUESTION 7

Compared to compounds that possess only dipole-dipole intermolecular forces, compounds that possess hydrogen bonding generally:

Have higher melting points

Have lower boiling points

Have the same melting points

Have lower melting points

3 points

QUESTION 8

The reason H
₂S exists as a gas while H
₂O exists as a liquid at room temperature is because:

	H₂S has more electrons than H₂O, causing a larger dispersion.
	H₂O has a lower boiling point than H₂S.
	H₂S possesses hydrogen bonds, while H₂O only possesses London dispersion forces.
	H₂O possesses hydrogen bonding, while H₂S does not.

3 points

QUESTION 9

Water, H
₂O, has a higher boiling point than methane, CH
₄.

TRUE

FALSE

2 points

QUESTION 10

The molecule I
₂ has a lower melting point than Cl
₂.

TRUE

FALSE

2 points