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E.1 Structure of the atom · SL + HL · IB-format practice · Set 1
Structure of the atom: Paper 2 practice
Four original structured questions in the style of IB Paper 2: alpha particles and a gold foil, energy levels and spectra, and (HL) closest approach and the Bohr model. Write your answers, then mark yourself with the IB-style markscheme.
4 questions40 marks68 minutesCalculator and data booklet allowed
Instructions
- Answer all the questions. Show your working: most marks are for the method, not just the final answer.
- The marks for each part are shown in brackets, for example [2]. Use them to judge how much to write.
- You have 68 minutes: about 1.7 minutes per mark.
- Type your answers in the boxes, or work on paper and use the boxes for short notes. Your answers are saved on this device.
- When you finish, the markscheme appears under each part. Award yourself the marks you earned.
Prefer paper? Download the question paper (PDF) · Markscheme (PDF)
How to use the markscheme. Each line ending in ✔ is one mark. Words in « » are not needed for the mark. A correct numerical answer with no working gets full marks unless a note says otherwise. ECF (error carried forward): you still get the mark if you used your own wrong answer from an earlier part correctly. Be honest: give a mark only if your answer has that point.