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C1 (Atoms (The nucleus (It's in the middle of atom, It contains…
C1
Atoms
The nucleus
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The nucleus has a radius of around 1 * 10(-14),
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The electrons
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They're negatively charged and tiny, but they cover a lot of space.
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Atoms contain protons, neutrons and electrons
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Elements
An element is a substance made up of atoms that all have the same number of protons in their nucleus
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