# Atoms contain subatomic particles. State the name, relative charge, and relative mass of each of the three subatomic particles found in an atom.

> Pearson Edexcel International GCSE Chemistry (4CH1) — 1.2 Atoms · State · 4 marks

## Mark scheme (4 marks)

1. Proton: relative charge +1
2. Proton: relative mass 1; Neutron: relative mass 1
3. Neutron: relative charge 0 (neutral / no charge)
4. Electron: relative charge −1 AND relative mass negligible (or 0)

## Key terms

- [atom](https://www.gradenine.co.uk/glossary/atom)

## Related

- [Revision notes for Pearson Edexcel International GCSE Chemistry (4CH1)](https://www.gradenine.co.uk/learn)
- [How to answer "State" questions](https://www.gradenine.co.uk/tools/command-word-cheatsheet)
- [Practice this with AI marking (free)](https://www.gradenine.co.uk/start)

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Source: [GradeNine](https://www.gradenine.co.uk/q/atoms-contain-subatomic-particles-state-the-3c7fe87e) · Published by Druglandscape Ltd.