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Cambridge IGCSE chemistry

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  1. States of matter
    States of matter
    3 Topics
  2. Changing state
    5 Topics
  3. Diffusion
    4 Topics
  4. Experimental techniques
    Taking measurements
    4 Topics
  5. Separation and purification
    4 Topics
  6. Chromatography
    2 Topics
Cambridge IGCSE chemistry Taking measurements Measuring liquids
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Lesson 4, Topic 1
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Measuring liquids

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Measuring liquid

Pipette

  • Pipettes are long, narrow tubes that are used to suck up an accurate volume of liquid and transfer it to another container.

  • A pipette filler attached to the end of the pipette is used so that you can safely control the amount of liquid you’re drawing up.

  • Pipettes are often calibrated to allow for the fact that the last drop of liquid stays in the pipette when the liquid is ejected. This reduces transfer errors

Burette

  • Burettes have a tap at the bottom which can be used to release the liquid into another container

  • To use a burette, take an initial reading, and once you’ve released ass much liquid as you want, take a final reading 

  • The difference between the readings tells you how much liquid you used

Measuring cylander

  • Measuring cylinders are the most common way to measure out a liquid.

  • They come in different sizes

  • You must choose an appropriate cylinder for the volume of liquid you are measuring. If you are measuring out a small amount of liquid, use a small measuring cylinder