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OCR A Level Chemistry B May-June 2024 Question Paper 1 (H433-01)
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OCR A Level Chemistry B May-June 2024 Question Paper 1 (H433-01)
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,ERRATUM NOTICE
Monday 10 June 2024 – Morning
A Level Chemistry B (Salters)
H433/01 Fundamentals of Chemistry
FOR THE ATTENTION OF THE EXAMS OFFICER
To be opened on the day of the exam
Instructions to invigilators:
Before the start of the exam, please read the following notice out twice to candidates:
Open the question paper to Page 29.
Look at Question 34 (e).
At the bottom of Question 34 (e) is an instruction, which reads:
Add curly errors to Step 2 to show the electron movements in the mechanism.
Cross out the third word in the instruction, ‘errors’.
Replace it with ‘arrows’ so that the instruction reads:
Add curly arrows to Step 2 to show the electron movements in the mechanism.
If you have any queries, please call our Customer Support Centre on 01223 553998 or email
support@ocr.org.uk
© OCR 2024 JUN24/Erratum Notice/Article Number 2262409426
, 2
Section A
You should spend a maximum of 40 minutes on this section.
Write your answer to each question in the box provided.
1 An isotope of an element has a mass number of 25.
What is correct for an atom of this isotope?
A It has 12 neutrons.
B It has 25 electrons.
C It has 25 protons.
D The sum of its protons and neutrons is 25.
Your answer [1]
2 What is correct about s orbitals?
A Only elements in Group 1 or Group 2 have them.
B They always contain 2 electrons.
C They are spherical in shape.
D They can contain up to 6 electrons.
Your answer [1]
3 Which species have an electron configuration ending in s1?
A atoms of some d-block elements
B atoms of Group 13
C ions of Group 2
D ions of Group 16
Your answer [1]
© OCR 2024
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