This Science quiz is called 'Particles and Energy' and it has been written by teachers to help you if you are studying the subject at middle school. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or 8th grade - aged 11 to 14.
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Matter (that's solids, liquids or gasses) is all made up from particles. Electrons, neutrinos and photons are all subatomic particles. A particle is something that is so tiny we can't see it. Scientists are continuously investigating matter and the particles from which matter is made. Atoms are so tiny you wouldn't even be able to see them with a good microscope - you would need a very special microscope. But atoms aren't the smallest particles - electrons, protons and neutrons are even tinier. And just wait until you learn about quarks!
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