Cambridge International IGCSE Chemistry (0620) · CAIE 0620
3 Stoichiometry
Written & reviewed by James Millett — Biology (Imperial College London), PGCE Science (University of Cambridge).
Practice questions on Stoichiometry
- A student says: 'Two moles of hydrogen gas (H₂) and two moles of neon gas (Ne) must have t… (4 marks, Evaluate)
- A teacher shows two samples to a class: one mole of copper atoms and one mole of sulfur at… (4 marks, Explain)
- A chemist has two samples: 0.5 mol of sodium chloride (NaCl) and 0.5 mol of magnesium (Mg)… (4 marks, Describe and Explain)
- Explain what is meant by the term 'mole' and state the significance of the Avogadro consta… (4 marks, Explain)
- Define the term 'relative atomic mass' and explain why the relative atomic mass of chlorin… (4 marks, Define and Explain)
- State the meaning of the formula MgCl₂ and describe what information the subscript '2' pro… (4 marks, State)
- Ammonia has the molecular formula NH₃. State the meaning of this molecular formula and exp… (4 marks, State and Explain)
- Describe what is meant by the term empirical formula and explain how the empirical formula… (4 marks, Describe)
- Explain the difference between a molecular formula and a structural formula, and state one… (4 marks, Explain)
- Glucose has the molecular formula C₆H₁₂O₆. State the empirical formula of glucose and expl… (4 marks, State and Explain)
- State what is meant by the term 'relative molecular mass' and explain how the relative mol… (4 marks, State and Explain)
- Explain how the relative formula mass of magnesium hydroxide, Mg(OH)₂, is determined from … (4 marks, Explain)
- Nitrogen forms a compound with hydrogen called ammonia, NH₃. Explain how the relative form… (4 marks, Explain)
- Carbon dioxide, CO₂, is a gas produced during respiration. Describe how the relative formu… (4 marks, Describe)
- A student states: 'One mole of carbon atoms and one mole of water molecules both contain t… (4 marks, Explain)