Edexcel A-Level Chemistry AS Paper 1, June 2019
Every question from Edexcel A-Level Chemistry AS Paper 1, June 2019 (8CH0): 9 questions, 80 marks, each with its mark scheme and topic.
- Question 1 1 mark
Calculate the total number of ions present in 306 g of aluminium oxide, Al2O3.
Physical Chemistry · Topic 5: Formulae, Equations and Amounts of Substance
- Question 2 1 mark
Identify the electronic configuration of the sulfide ion, S2-.
Physical Chemistry · Topic 1: Atomic Structure and the Periodic Table
- Question 3 4 marks
Define isotopes in terms of subatomic particles and calculate the mass number of a second gallium isotope given its relative atomic mass and the abundance of the first isotope.
Physical Chemistry · Topic 1: Atomic Structure and the Periodic Table
- Question 4 6 marks
Describe trends in thermal stability, solubility, and practical methods to compare thermal stability for Group 2 compounds.
Inorganic Chemistry · Topic 4: Inorganic Chemistry and the Periodic Table
- Question 5 4 marks
Calculate the percentage by mass of iron in iron(II) sulfate, describe the chemical test for sulfate ions, and calculate the molar mass of Mohr's salt.
Physical Chemistry · Inorganic Chemistry · Topic 5: Formulae, Equations and Amounts of Substance · Topic 4: Inorganic Chemistry and the Periodic Table
- Question 6 11 marks
Describe the procedure of a flame test and explain its origin of colour, give reasons regarding magnesium ion flame test limitations, identify reagents for magnesium bromide anion tests, and determine the solubility of silver bromide in ammonia solutions.
Inorganic Chemistry · Core Practicals · Topic 4: Inorganic Chemistry and the Periodic Table · Core Practical 7: Identify unknown organic liquids and inorganic solids
- Question 7 15 marks
Calculate the volume of hydrogen gas produced in the reaction between magnesium and hydrochloric acid using the ideal gas equation and stoichiometry.
Physical Chemistry · Core Practicals · Topic 5: Formulae, Equations and Amounts of Substance · Core Practical 1: Measuring the molar volume of a gas
- Question 8 15 marks
Explain the differences in melting temperatures, electrical conductivity, structures, densities, and compressive strengths of various elements and compounds including graphene, graphite, diamond, magnesium oxide, potassium bromide, and iron.
Physical Chemistry · Inorganic Chemistry · Organic Chemistry · Topic 2: Bonding and Structure
- Question 9 23 marks
Assess various aspects of chlorine and its compounds including disproportionation, VSEPR shapes, redox balancing, separation techniques, mole calculations, equilibria, hydration of ions, intermolecular forces, and stoichiometry.
Inorganic Chemistry · Physical Chemistry · Organic Chemistry · Core Practicals · Topic 4: Inorganic Chemistry and the Periodic Table · Topic 2: Bonding and Structure · Topic 5: Formulae, Equations and Amounts of Substance