This presentation is all about
atomic structure
The Specification says………..
Basic Structure is a small central
nucleus composed of protons and
neutrons
Neutrons
Protons
The nucleus is surrounded by
electrons
Protons have a positive
charge, electrons have a negative
charge and neutrons have no charge
Protons and neutrons are a similar
size. Electrons are much smaller
In an atom the number of protons
= the number of electrons
The atoms has overall no electrical
charge
Atoms may lose or gain electrons to
form ions
Isotope of an element
Isotopes – atoms have same numbers
of protons but can have a different
number of neutrons
The total number of protons in an
atom is called the atomic number
The total number of protons and
neutrons is called its mass number
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Atomic structure for AQA GCSE Physics

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Atomic structure for AQA GCSE Physics

  1. 1. This presentation is all about atomic structure
  2. 2. The Specification says………..
  3. 3. Basic Structure is a small central nucleus composed of protons and neutrons Neutrons Protons
  4. 4. The nucleus is surrounded by electrons
  5. 5. Protons have a positive charge, electrons have a negative charge and neutrons have no charge
  6. 6. Protons and neutrons are a similar size. Electrons are much smaller
  7. 7. In an atom the number of protons = the number of electrons
  8. 8. The atoms has overall no electrical charge
  9. 9. Atoms may lose or gain electrons to form ions
  10. 10. Isotope of an element
  11. 11. Isotopes – atoms have same numbers of protons but can have a different number of neutrons
  12. 12. The total number of protons in an atom is called the atomic number
  13. 13. The total number of protons and neutrons is called its mass number
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