2.1.12

Evaporation

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Evaporation

When a substance evaporates, it turns from a liquid into a vapour. Evaporation can occur naturally or by boiling the liquid.

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Evaporation

  • Evaporation is when a liquid is physically changed into a gas or vapour.
  • Evaporation of a liquid occurs at a lower temperature than the liquid's boiling point.
    • The boiling point is the temperature at which a liquid will change state.
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Separating a solution

  • A solution can be made by mixing copper sulphate and water.
    • The water acts as the solvent and dissolves the copper sulphate.
  • If you heat the solution, the water will evaporate rapidly.
    • Copper sulphate does not evaporate.
    • Crystals of copper sulphate will be left behind.
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Evaporating naturally

  • If the copper sulphate and water solution evaporates naturally, the process will take more time.
    • The longer the evaporation process takes, the larger the copper sulphate crystals will be.

Jump to other topics

1Biology

1.1Cells, Tissues & Organs

1.2Reproduction & Variation

1.3Ecological Relationships & Classification

1.4Digestion & Nutrition

1.5Plants & Photosynthesis

1.6Biological Systems & Processes

2Chemistry

2.1Particles

2.2Chemical Reactions

2.3Atoms, Elements, Compounds

2.4The Periodic Table

2.5Materials & the Earth

2.6Reactivity

2.7Energetics

2.8Properties of Materials

3Physics

3.1Energy

3.2Forces & Motion

3.3Waves

3.4Electricity & Magnetism

3.5Matter

3.6Space Physics

4Thinking Scientifically

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