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Primary Science · Year 4Chapter 6 · Solids, liquids and gases
Year 4 Science · Solids, liquids and gases · Summary

Year 4 Science Solids, liquids and gases: summary and key words

Part of the Year 4 Science solids, liquids and gases chapter. Chapter overview · whole chapter on one page

Chapter summary

SkillMethod
SolidKeeps its own shape. Hard to squash. Does not flow. Examples: wood, metal, rock, plastic, ice.
LiquidFlows and can be poured. Takes the shape of its container, but keeps the same amount. Examples: water, milk, oil, juice.
GasSpreads out to fill its container. Can be squashed. Examples: air, the bubbles in fizzy water.
GroupingCompare the features of each material. Each material belongs to one group.
Fair testKeep the amount the same, and change only the container. Measure the amount in ml.

Can you…?

  • I can say what a solid, a liquid and a gas are like
  • I can sort everyday materials into solids, liquids and gases
  • I can count the materials in each group, using a table
  • I can explain that a liquid keeps the same amount but changes its shape
  • I can plan and read a fair test on the shape of a liquid
  • I can explain why materials are grouped by their features

Key terms

solid
a material that keeps its own shape and does not flow
liquid
a material that flows, can be poured, and takes the shape of its container
gas
a material that has no fixed shape and spreads out to fill its container
material
what something is made of, such as wood, water or air
state
whether a material is a solid, a liquid or a gas
carbon dioxide
the gas in the bubbles in fizzy water
volume
how much space something takes up, or how much liquid there is
millilitre
a unit for measuring an amount of liquid, written ml

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