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Liquid Layers Lab Worksheet

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Liquid Layers Lab Worksheet

A science team is planning a safe liquid-layers demonstration. Read the lab notes and use the density clues to solve the questions. No experiment is needed.

Lab notes

Density describes how much mass is packed into a certain volume. For liquids that do not mix, a less-dense liquid can rest above a denser one. In this model, golden syrup is denser than water, and water is denser than cooking oil. Pouring gently helps keep the layers separate. Objects can sink through a liquid that is less dense than they are, then float when they reach a denser liquid. The grape in question 4 is denser than cooking oil and water, but less dense than golden syrup.

1.Write the three liquids in order from least dense to most dense, using the lab notes.
2.According to the lab notes, why can the cooking oil rest above the water?
  • The oil is less dense than the water and the liquids do not mix.
  • The oil is colder, so it always rises.
  • The water has no mass.
  • The beaker pulls the oil upwards.
3.True or false: In this model, the densest liquid forms the top layer.
TrueFalse
4.A grape has a density of 1.10 g/mL. It is gently placed on top of the oil. Which layer should it pass through, and where should it stop?
5.Match each liquid to its relative density in the model.
  • Cooking oil
  • Water
  • Golden syrup
  • Most dense
  • Least dense
  • In between
6.A steel paperclip is much denser than all three liquids. If it is released gently above the layers, where is it most likely to finish? Explain briefly.
7.The amount of mass packed into a certain volume is called .
8.A student pours the liquids quickly and the layers become cloudy and mixed. Give one practical change that could help the layers stay separate.
9.A mystery liquid is added and settles between the water and golden syrup. What can you infer about its density compared with those two liquids?
10.Draw a beaker with the three liquids in the correct order. Label each layer and add an arrow showing which way density increases.

2 printable pages

  • Liquid Layers Lab Worksheet, page 1 of 2: Lab notes

    Page 1

  • Liquid Layers Lab Worksheet, page 2 of 2: 5. Match each liquid to its relative density in the model.

    Page 2

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