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Atoms and elements 5.1 (Elements (Elements are the building blocks from…
Atoms and elements 5.1
Atoms
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The nucleus
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Protons are positive in charge, neutrons and neutral and electrons are negatively charged.
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Isotopes
When the same element has a different number of neutrons they are known as isotopes (The atomic number remains the same)
This gives them a different mass number e.g. H with 1 neutron and 1 proton / H with 2 neutron and 1 proton
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