Rose Project Protons, neutrons and electrons

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Rose Project Protons, neutrons and electrons

  1. 1. Protons, Neutrons and Electrons<br />For GCSE Science<br />
  2. 2. Nucleus<br />It is found in the middle of the atom<br />It contains protons and neutrons<br />It has a positive charge<br />
  3. 3. Parts of an atom<br />
  4. 4. Protons are heavy and have a positive charge<br />Neutrons are heavy and are neutral<br />Electrons are very light and are negatively charged<br />
  5. 5. The number of protons = The number of electrons<br />The number of neutrons = The mass number - protons<br />
  6. 6. If you look at the periodic table at a Sodium Atom you will see its chemical symbol is Na. <br />Mass Number<br />The mass number = number of protons and neutrons.<br />Na<br />Atomic<br />Number<br />
  7. 7. For GCSE Chemistry<br />Electrons occupy shells, orbits or energy levels.<br />The lowest, inner shells are filled first<br />Once the shell is full they go onto the next<br />The first shell can have a maximum of 2 electrons<br />The second shell can have a maximum of 8 electrons<br />The third shell can have a maximum of 8 electrons<br />
  8. 8. Atoms like full electronic shells.<br />If the outer shell is not full, it makes them want to react. <br />

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