Which particle has a mass close to that of a proton and carries no electric charge?

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Study for the WJEC GCSE Chemistry Exam. Utilize flashcards and multiple choice questions, each with hints and explanations. Prepare effectively for your exam!

Multiple Choice

Which particle has a mass close to that of a proton and carries no electric charge?

Explanation:
The key idea is comparing mass and electric charge of nucleons. The particle that has almost the same mass as a proton but carries no electric charge is the neutron. Protons are positively charged, while electrons and positrons carry charge (and have much smaller mass). Neutrons have roughly 1 atomic mass unit, very close to the proton’s mass, but their electric charge is zero, matching the description.

The key idea is comparing mass and electric charge of nucleons. The particle that has almost the same mass as a proton but carries no electric charge is the neutron. Protons are positively charged, while electrons and positrons carry charge (and have much smaller mass). Neutrons have roughly 1 atomic mass unit, very close to the proton’s mass, but their electric charge is zero, matching the description.

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