The terms in bold link to topics in the AQA, Edexcel, OCR, WJEC and CCEA A-level specifications, as well as the IB, Pre-U and SQA exam specifications.
An object’s mass tells you how much ‘stuff’ it consists of. A better description refers to energy. Mass is found in the gluons that hold quarks together as constituents of protons and neutrons.
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