From Paper 3, Higher
Describe Chadwick's contribution to the model of the atom.
From Paper 3, Higher
Explain what Bohr added to the nuclear model.
From Paper 3, Higher
Explain the difference between a compound and a mixture, with an example of each.
From Paper 3, Higher
Describe how to separate pure water from ink by distillation.
From Paper 3, Higher
Describe how the plum pudding model of the atom was replaced by the nuclear model.
From Paper 3, Higher
An atom of potassium has mass number 39 and atomic number 19. Give the numbers of protons, neutrons and electrons.
Score 0 / 18 · 0 of 6 marked
This paper is written by Plasmo in the style of the OCR GCSE Chemistry exam. It is not a past paper and is not produced or endorsed by the exam board.