Other questions in this quiz

2. What is crystallisation?

  • The separation of a dissolved solid from a solution, when the solid is much more soluble in hot solvent than in cold
  • Melting a compound before we can electrolyse it

3. How can scientists measure very small forces?

  • Weights
  • They use probes to detect particles and reposition them (atomic force microscopes)
  • Magnify Glass
  • Microscope

4. What is diffusion?

  • When a gas moves freely from an area of high concentration to low concentration
  • When a gas gives of a smell

5. What is paper chromatography?

  • The separation of substances that have different solubilities in a given solvent
  • Coloured paper used to identify a substance's pH levels


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