Chemistry

Question 1

1Water has a high boiling point for its size because of

Easy

A. van der Waals forces only B. hydrogen bonding C. ionic bonding D. metallic bonding

Question 2

2Ice floats on water because hydrogen bonding in ice

Medium

A. creates an open structure that is less dense B. breaks completely C. makes ice ionic D. makes ice heavier

Question 3

3Hydrogen bonding occurs between molecules in which hydrogen is bonded to

Easy

A. N, O or F B. metals C. C D. Cl only

Question 4

4Iodine sublimes easily because its molecules are held by

Easy

A. strong ionic bonds B. hydrogen bonds C. metallic bonds D. weak van der Waals forces

Question 5

5Water has an unusually high boiling point for its size because of

Easy

A. ionic bonding B. metallic bonding C. hydrogen bonding between molecules D. its low mass

Question 6

6The weak forces between non-polar molecules such as iodine are

Easy

A. ionic bonds B. hydrogen bonds C. covalent bonds D. van der Waals (dispersion) forces

Question 7

7Which molecule can form hydrogen bonds?

Easy

A. NH₃ B. CO₂ C. CH₄ D. H₂

Question 8

8The weakest intermolecular forces are

Easy

A. hydrogen bonds B. ionic bonds C. van der Waals (London dispersion) forces D. covalent bonds

Question 9

9The boiling point of HF is higher than HCl mainly because of

Medium

A. hydrogen bonding in HF B. ionic bonding C. metallic bonding D. greater mass of HF

Question 10

10Ethanol has a higher boiling point than propane (similar mass) because ethanol

Hard

A. has weaker forces B. is ionic C. is a metal D. forms hydrogen bonds