Chemistry 0620 · IGCSE · Exothermic and endothermic reactions

Exothermic and endothermic reactions — practice question

When blue copper(II) sulfate is heated, a white solid and water are produced. If water is added to the white solid, it turns blue and releases heat. Which terms are used to describe the blue copper(II) sulfate and the two reactions?

  • Aa mixture; can be reversed
  • Ba mixture; cannot be reversed
  • Chydrated; can be reversed
  • Dhydrated; cannot be reversed

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI