←Atomic structure and the periodic table
From Paper 1, Higher
Describe how the plum pudding model of the atom was replaced by the nuclear model.
From Paper 1, Higher
Explain why the reactivity of Group 1 metals increases down the group.
From Paper 1, Higher
An atom of potassium has mass number 39 and atomic number 19. Give the numbers of protons, neutrons and electrons.
From Paper 1, Higher
Describe what you would see when potassium is added to water and write a balanced equation.
From Paper 1, Higher
An element has two isotopes: mass 35 (75%) and mass 37 (25%). Calculate its relative atomic mass.
From Paper 1, Higher
Explain why chlorine displaces bromine from potassium bromide solution and write an ionic equation.
From Paper 1, Higher
An element has two isotopes: mass 63 (69%) and mass 65 (31%). Calculate its relative atomic mass.
From Paper 1, Higher
Explain why the noble gases are unreactive.
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This paper is written by Plasmo in the style of the AQA GCSE Chemistry exam. It is not a past paper and is not produced or endorsed by the exam board.