Edexcel A-Level Chemistry AS Paper 1, June 2023
Every question from Edexcel A-Level Chemistry AS Paper 1, June 2023 (8CH0): 9 questions, 80 marks, each with its mark scheme and topic.
- Question 1 6 marks
Identify fundamental particle properties, orbital shapes, calculate relative isotopic mass from isotopic abundances, and determine nuclide symbols for silicon isotopes and related atoms.
Physical Chemistry · Topic 1: Atomic Structure and the Periodic Table
- Question 2 10 marks
Calculate relative formula mass, amount in moles, describe flame and precipitation tests for cations and anions in the double salt K2Mg(SO4)2·6H2O.
Physical Chemistry · Inorganic Chemistry · Topic 5: Formulae, Equations and Amounts of Substance · Topic 4: Inorganic Chemistry and the Periodic Table
- Question 3 12 marks
Assess properties, bonding, formulas, and reactivity of Group 7 elements and their compounds including oxidation states, dot-and-cross diagrams, empirical formula calculations, bond enthalpy trends, and displacement reactions.
Inorganic Chemistry · Physical Chemistry · Organic Chemistry · Topic 4: Inorganic Chemistry and the Periodic Table · Topic 2: Bonding and Structure · Topic 3: Redox I · Topic 5: Formulae, Equations and Amounts of Substance · Topic 15: Transition Metals
- Question 4 7 marks
Explain the high melting temperature of magnesium due to its structure, calculate the minimum volume of hydrochloric acid required to react with potassium manganate(VII) to produce a given mass of magnesium chloride, and identify the meaning of a hazard symbol.
Physical Chemistry · Inorganic Chemistry · Topic 2: Bonding and Structure · Topic 5: Formulae, Equations and Amounts of Substance · Topic 3: Redox I
- Question 5 9 marks
Discuss electronegativity, its trend in Group 7, the continuum of bonding type, and how Period 3 chloride and chlorine data demonstrate this bonding continuum.
Physical Chemistry · Inorganic Chemistry · Topic 2: Bonding and Structure · Topic 4: Inorganic Chemistry and the Periodic Table
- Question 6 7 marks
State the definitions of oxidation and reduction in terms of electron transfer, identify oxidising and reducing agents in a redox reaction, and complete and justify a disproportionation equation using oxidation numbers.
Physical Chemistry · Inorganic Chemistry · Topic 3: Redox I · Topic 4: Inorganic Chemistry and the Periodic Table
- Question 7 6 marks
Draw a dot-and-cross diagram for potassium chloride, deduce and justify the order of increasing size for various ions, and calculate the concentration of calcium ions in a saturated calcium hydroxide solution.
Physical Chemistry · Inorganic Chemistry · Topic 2: Bonding and Structure · Topic 5: Formulae, Equations and Amounts of Substance · Topic 1: Atomic Structure and the Periodic Table
- Question 8 12 marks
Evaluate sources of inaccuracy in an experiment measuring the molar volume of carbon dioxide produced from calcium carbonate and nitric acid, calculate the molar volume using graphical data, and apply the ideal gas equation.
Physical Chemistry · Core Practicals · Topic 5: Formulae, Equations and Amounts of Substance · Core Practical 1: Measuring the molar volume of a gas
- Question 9 11 marks
Identify Group 3 elements from successive ionisation energies, write the equation for the second ionisation of beryllium, explain trends in ionisation energies for Group 2 elements, and relate these to reactivity with chlorine.
Physical Chemistry · Inorganic Chemistry · Topic 1: Atomic Structure and the Periodic Table · Topic 4: Inorganic Chemistry and the Periodic Table