# Polymers are large molecules made up of monomers joined together by covalent bonds. Explain why polymers are solids at room temperature and why they do not conduct electricity.

> Eduqas GCSE Chemistry — C2 Bonding, structure and properties · Explain · 4 marks

## Mark scheme (4 marks)

1. Intermolecular forces between polymer molecules are relatively strong
2. The strong intermolecular forces require a lot of energy to overcome, so the melting point is above room temperature / the polymer remains solid at room temperature
3. Simple molecules / polymers do not have an overall electric charge
4. There are no free / delocalised electrons (or ions) to carry the electrical charge / current

## Key terms

- [polymer](https://www.gradenine.co.uk/glossary/polymer)
- [monomer](https://www.gradenine.co.uk/glossary/monomer)
- [covalent bond](https://www.gradenine.co.uk/glossary/covalent-bond)

## Related

- [Revision notes for Eduqas GCSE Chemistry](https://www.gradenine.co.uk/learn)
- [How to answer "Explain" questions](https://www.gradenine.co.uk/tools/command-word-cheatsheet)
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Source: [GradeNine](https://www.gradenine.co.uk/q/polymers-are-large-molecules-made-up-4c7c82a3) · Published by Druglandscape Ltd.