model’ of the atom. The Draw a diagram to illustrate the coins go straight model’ model’ of the through without ‘plum-pudding ‘plum-pudding suggested that the atom was atom. scattering? What a ball of positive charge with conclusion can be Explain why the ‘plum-pudding negative electrons drawn about the model’ was than the ‘better’ embedded in it. arrangement of atomic Greek model of the indivisible nuclei in a material The results from thealpha atom. and the amount of free scattering experiment led to space between nuclei? Describe the alpha scattering the conclusion that the mass experiment What was so of an atom was concentrated amazing about the alpha at the centre (nucleus) and that the nucleus was scattering experiment? Details charged. of these experiments are not required. The alpha scattering experiment led to the Explain how the evidence from model’ being the scattering experiment led to replaced by the nuclear a change in the atomic model of model. the atom. Bohr adapted the Describe the difference between nuclear model by suggesting the model’ of the ‘plum-pudding that electrons orbit the atom and the nuclear model of nucleus at specific the atom. distances. Produce a timeline to show how Later experiments led to the our ideas about atoms have idea that the positive charge changed since ancient Greek of any nucleus could be times. subdivided into a whole number of smaller particles, each particle having the
model’ of the atom. The ‘plum-pudding model’ suggested that the atom was a ball of positive charge with negative electrons embedded in it. The results from thealpha scattering experiment led to the conclusion that the mass of an atom was concentrated at the centre (nucleus) and that the nucleus was charged. The alpha scattering experiment led to the model’ being replaced by the nuclear model. Bohr adapted the nuclear model by suggesting that electrons orbit the nucleus at specific distances. Later experiments led to the idea that the positive charge of any nucleus could be subdivided into a whole number of smaller particles, each particle having the Draw a diagram to illustrate the ‘plum-pudding model’ of the atom. Explain why the ‘plum-pudding model’ was ‘better’ than the Greek model of the indivisible atom. Describe the alpha scattering experiment What was so amazing about the alpha scattering experiment? Details of these experiments are not required. Explain how the evidence from the scattering experiment led to a change in the atomic model of the atom. Describe the difference between the ‘plum-pudding model’ of the atom and the nuclear model of the atom. Produce a timeline to show how our ideas about atoms have changed since ancient Greek times. coins go straight through without scattering? What conclusion can be drawn about the arrangement of atomic nuclei in a material and the amount of free space between nuclei?
AQA-8464-SOW-ATOM.DOCX