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Q1
This question is about the structure of the atom.
(a) Complete the sentences.
Choose answers from the box.
Each word may be used once, more than once, or not at all.
The centre of the atom is the ______________________.
The two types of particle in the centre of the atom are the proton
and the ______________________.
James Chadwick proved the existence of the _______________________
Niels Bohr suggested particles orbit the centre of the atom. This type of particle
is the ______________________. The two types of particle with the same
mass are the neutron and the ______________________.
(5)
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Both models have electrons in the atom.
They both also have something that is positively charged.
In the plum pudding model, the positive charge is spread out, but in the nuclear model, it’s all in the middle.
Also, in the nuclear model, most of the atom is empty space, but the plum pudding model has no empty space.
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