Edexcel A-Level Chemistry AS Paper 1, November 2021
Every question from Edexcel A-Level Chemistry AS Paper 1, November 2021 (8CH0): 7 questions, 80 marks, each with its mark scheme and topic.
- Question 1 7 marks
Analyze bromine isotopes and their atomic structure, electronic configuration, and relative abundance measurement.
Physical Chemistry · Organic Chemistry · Topic 1: Atomic Structure and the Periodic Table · Topic 7: Modern Analytical Techniques I
- Question 2 17 marks
Describe the preparation of a standard solution, determine titration end-point colours and mean titres, and perform stoichiometric calculations involving hydrates, acid-base neutralisation, and percentage yield.
Physical Chemistry · Core Practicals · Topic 5: Formulae, Equations and Amounts of Substance · Core Practical 2: Preparation of a standard solution from a solid acid · Core Practical 3: Find the concentration of a solution of hydrochloric acid
- Question 3 8 marks
Write a balanced equation for the reaction of ammonia with sodium, draw 3D shapes and lone pairs for an ammonia molecule and an amide ion, state the H-N-H bond angle in ammonia, explain the difference in bond angle between ammonia and the amide ion, and give a reason why sodium amide is stored in oil.
Physical Chemistry · Inorganic Chemistry · Topic 2: Bonding and Structure · Topic 5: Formulae, Equations and Amounts of Substance · Topic 4: Inorganic Chemistry and the Periodic Table
- Question 4 16 marks
Analyze ionisation energy trends for sulfur and related elements, calculate the relative molecular mass of a sulfur oxide using the ideal gas equation, and plot melting temperatures of Group 6 dihydrogen compounds.
Physical Chemistry · Topic 1: Atomic Structure and the Periodic Table · Topic 5: Formulae, Equations and Amounts of Substance · Topic 2: Bonding and Structure
- Question 5 7 marks
Explain the difference in melting temperature between diamond and iodine, and describe the key bonding feature in graphite that allows it to conduct electricity.
Physical Chemistry · Topic 2: Bonding and Structure
- Question 6 13 marks
Analyze reactions of halogens and halides involving redox properties, disproportionation, and stoichiometric calculations.
Inorganic Chemistry · Physical Chemistry · Topic 4: Inorganic Chemistry and the Periodic Table · Topic 3: Redox I · Topic 5: Formulae, Equations and Amounts of Substance
- Question 7 12 marks
State the meaning of an ionic bond, calculate the percentage by mass of strontium in strontium nitrate, analyze flame test chemistry for group 1 and 2 compounds, and devise a procedure to identify lithium, rubidium, and strontium nitrates.
Physical Chemistry · Inorganic Chemistry · Organic Chemistry · Topic 2: Bonding and Structure · Topic 5: Formulae, Equations and Amounts of Substance · Topic 4: Inorganic Chemistry and the Periodic Table · Topic 1: Atomic Structure and the Periodic Table