Which subatomic particle has a negative electric charge and a relatively small mass compared with protons and neutrons?

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Prepare for the WJEC GCSE Chemistry Exam with multiple choice questions and detailed explanations. Enhance your knowledge and boost your confidence. Get exam-ready today!

Multiple Choice

Which subatomic particle has a negative electric charge and a relatively small mass compared with protons and neutrons?

Explanation:
The key idea is that the electron is the negatively charged particle with a much smaller mass than the particles in the nucleus. Protons carry positive charge, neutrons have no charge, and the positron is an antiparticle of the electron with the same tiny mass but positive charge. So the only particle that has both a negative charge and the relatively small mass compared with protons and neutrons is the electron.

The key idea is that the electron is the negatively charged particle with a much smaller mass than the particles in the nucleus. Protons carry positive charge, neutrons have no charge, and the positron is an antiparticle of the electron with the same tiny mass but positive charge. So the only particle that has both a negative charge and the relatively small mass compared with protons and neutrons is the electron.

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