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KS3 ATOMS

The structure of Atoms

QuestionAnswer
What are the three main particles in an atom? Neutrons, Protons and Electrons
Which two sub-atomic particles are found in the nucleus of an atom? Protons and Neutrons
Which sub-atomic particles orbit around the nucleus? Electrons
Which sub-atomic particles are negatively charged? Electrons
Which sub-atomic particles carry a positive charge? Protons
What do we call an atom which has lost or gained electrons? an ion
What type of charge do protons have? Positive
What type of charge do neutrons have? None, they are neutral
Where is most of the mass of an atom? In the nucleus
Which sub-atomic particle has the smallest mass? Electron
What is an element? A substance that contains only one type of atom
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