Development of the atomic model
Describe the discoveries that led to an increased understanding of the structure of atoms and how we have arrived at the current atomic model.
Development of the atomic model
Describe the discoveries that led to an increased understanding of the structure of atoms and how we have arrived at the current atomic model.
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Key learning points
- Describe discoveries that led to the development of the atomic model
- Describe the alpha particle scattering experiment and the discoveries it led to
- Compare the nuclear model with the plum pudding model
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This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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6 Questions
Q1.
An atom consists of protons, neutrons and .
Q2.
Which two statements are correct?
Like charges attract.
Opposite charges repel.
Q3.
Which subatomic particles are found in the nucleus?
electrons only
protons and electrons
protons only
protons, neutrons and electrons
Q4.
Match the subatomic particle to its charge.
positive
negative
neutral
Q5.
Which subatomic particle has an insignificant mass?
neutron
proton
Q6.
Which subatomic particle is in shells that orbit the nucleus?
neutrons
protons
6 Questions
Q1.
Which atomic model is the most commonly accepted model today?
JJ Thomson model
Bohr model
Dalton model
Rutherford model
Q2.
Whose atomic model determined that an atom's positive charge is concentrated in the centre?
Bohr
Dalton
Thomson
Q3.
During the alpha particle scattering experiment, why were some particles deflected at angles as they travelled through?
Most of the atom is empty space meaning it was difficult for particles to maintain a straight path.
The mass of the atom is concentrated in the nucleus, which has a tiny volume.
They were attracted to electrons surrounding the nucleus, taking them off course.
Q4.
Which two statements are correct about the Bohr's atomic model?
Electrons exist in clouds orbiting in the nucleus.
Neutrally charged particles are located in the nucleus.
The positive charge is spread evenly throughout the atom.
Q5.
Match the scientist to the component of the atom they found evidence for.
JJ Thomson
Chadwick
Bohr
Rutherford
Q6.
The plum pudding model was developed by ...
Bohr.
Chadwick
Dalton.
Rutherford.