Using a Graduated Cylinder

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Using a Graduated Cylinder
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Using a Graduated Cylinder

• 1. Understand the size of the graduated cylinder
  and its markings-
• 1001ml near the top means it is a 100 milliliter
  (ml) beaker and has a line marking every one
  milliliter increment
• 5005ml near the top means it is a 500ml beaker
  and has a line marking every 5ml increment
• What would 100.2ml mean?

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Size of a Graduated Cylinder
1001ml
100.2ml
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How to read the volume of a liquid in a
graduated cylinder

• The meniscus is the upper surface of a liquid in
  a tube. The meniscus tends to be U-shaped in a
  graduated cylinder.

Meniscus
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How to read the volume of a liquid in a
graduated cylinder

• 1. Always measure volume in a graduated cylinder
  at the bottom of the meniscus.
• 2. Always look straight from the side of the
  meniscus at the graduated cylinder to measure
  volume.
• NOT from above
• NOT from below

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Reading a graduated cylinders volume
From above meniscus WRONG!!!!!
From below meniscus WRONG!!!!!
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Reading a graduated cylinders volume
From the side of the meniscus CORRECT!!!
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Measuring volume of an irregularly-shaped object

• 1.Put a moderate amount of water in a graduated
  cylinder and measure the volume.
• 2. Place the object in the graduated cylinder
  with the water.
• 3. Measure the volume of the water in the
  graduated cylinder with the object submerged in
  it.
• 4. Subtract the volume of just the water from
  the volume of the water with the objectsubmerged.
  This value tells you the volume of the object.

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Measuring volume of an irregularly-shaped object

• For example, if there is 85ml of water in a
  graduated cylinder and you add an object, then
  the volume of the water and the object is 92ml.
  What is the volume of the object?
• 92ml (volume of water with object submerged)
• -85ml (volume of just the water)

7ml (volume of object)
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