Chemistry 0620 · IGCSE · Elements, compounds and mixtures

Elements, compounds and mixtures — practice question

Which statement indicates that a liquid is pure water?

  • AIt boils at $100\,^{\circ}\text{C}$.
  • BIt has a pH value of $7$.
  • CIt turns blue cobalt(II) chloride pink.
  • DIt turns white copper(II) sulfate blue.

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