IB DP Chemistry: Chemical bonding and structure

Question 1

In which of the following structures are the carbon–carbon bonds all the same length?

Accepted Answer

D

Question 2

Arrange the following diatomic molecules in order of increasing bond length.

Accepted Answer

N2 < O2 < F2 < Cl2

Question 3

Which molecule has a net dipole moment?

Accepted Answer

CH2Cl2

Question 4

The formula of iron(III) sulfate is Fe2(SO4)3. What is the total number of ions represented in this formula?

Accepted Answer

5

Question 5

What interaction within the structure of graphite has to be overcome when writing with a pencil?

Accepted Answer

London dispersion forces

Question 6

Which of the following ionic compounds would you expect to have the highest melting point?

Accepted Answer

LiF

Question 7

If aluminium is soft and malleable while raw tungsten is hard and brittle, which of the following statements is correct?

Accepted Answer

When you squeeze or press aluminium, it will bend easily

Question 8

Which of the following is the correct definition of ionic bonding?

Accepted Answer

Electrostatic attraction between oppositely charged ions

Question 9

Look at the structure of a soap (surfactant) and deduce what solvent(s) the molecule will be soluble in.

Accepted Answer

Water and oil

Question 10

Which of the following explains why alloys are less malleable than their base metals?

Accepted Answer

difficult for layers to slide past one another

Question 11

Identify the correct species responsible for electrical conductivity in a sample of molten sodium chloride.

Accepted Answer

positively and negatively charged ions

Questions 11