New
New
Lesson 7 of 7
New
New
- Year 11
- AQA
Polymer structures
I can describe the structure and properties of a polymer.
Lesson details
Key learning points
- Polymers are very large covalent molecules (not giant structures)
- Polymers can be represented by showing repeated units
- Polymers consist of repeating and identical sections called monomers
- Polymers are solid at room temperature because the intermolecular forces between polymer molecules are relatively strong
Keywords
Polymer - Polymers are long-chained molecules formed by joining together monomers.
Monomer - Monomers are small molecules that can join together to form a polymer.
Repeating unit - The section of a polymer that repeats is known as the repeating unit.
Intermolecular forces - Intermolecular forces are weak forces of attraction between molecules, and molecular substances.
Common misconception
Not including the bonds either side of the repeating unit.
The slide deck states the need for open bonds to show how repeating units are bonded to each other.
Molymods are useful for showing how the C=C bond in monomers opens up allowing monomers to join together to form a polymer.
Teacher tip
Equipment
Molymods (optional).
Licence
This content is © Oak National Academy Limited (2026), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Prior knowledge starter quiz
6 Questions
Q1.Which type of bond is present in alkenes that is not present in alkanes?
Which type of bond is present in alkenes that is not present in alkanes?
single ionic
triple covalent
Q2.Which type of bond involves the sharing of electrons between atoms?
Which type of bond involves the sharing of electrons between atoms?
ionic
metallic
hydrogen
Q3.Which of the following is a simple covalent molecule?
Which of the following is a simple covalent molecule?
diamond
graphite
sodium chloride
Q4.Which of the following properties do simple covalent molecules have in common?
Which of the following properties do simple covalent molecules have in common?
high melting point
good electrical conductor
solid at room temperature
Q5.Why do simple covalent molecules generally have low boiling points?
Why do simple covalent molecules generally have low boiling points?
They have strong ionic bonds within the molecules.
They have strong covalent bonds within the molecules.
They are made of large molecules.
Q6.Match the following key terms to their definition.
Match the following key terms to their definition.
Assessment exit quiz
6 Questions
Q1.What is the key term used to describe the small molecules that can join together to form a polymer?
What is the key term used to describe the small molecules that can join together to form a polymer?
Q2.Which of the following is the term for the reaction that forms polymers from monomers?
Which of the following is the term for the reaction that forms polymers from monomers?
hydrolysis
combustion
cracking
fractional distillation
Q3.What are polymers?
What are polymers?
small molecules with ionic bonds
metals with giant structures
simple molecules with low boiling points
Q4.What is shown in the image?
What is shown in the image?

a repeating unit
a polymer
polymerisation
Q5.Which of the following types of bond is found within the repeating units of a polymer formed from alkenes?
Which of the following types of bond is found within the repeating units of a polymer formed from alkenes?
metallic
ionic
hydrogen
Q6.Why are polymers solid at room temperature?
Why are polymers solid at room temperature?
They have strong ionic bonds between the molecules.
They have strong covalent bonds within the molecules.
They have strong covalent bonds between the molecules.