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Lesson · Grade 4 · Science

Solids, Liquids and Gases: How the Particles Are Arranged

  • Grade 4
  • Science
  • 1 min 2 s
  • British Columbia
  • BC4-SC-05

Three labelled boxes fill in one at a time. In a solid the particles are packed close together and jiggle in place, so it keeps its shape; in a liquid they are still close together but slide past each other, so it flows to fit its container; in a gas they are far apart and move freely in all directions, so it fills its whole container. The video ends on a one-line recap: solid packed, liquid sliding, gas far apart.

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In one sentence

The question this lesson answers

Solids, liquids and gases are all made of tiny particles.

How are the particles arranged in each one?

Transcript

What the lesson says

Solids, liquids and gases are all made of tiny particles.

How are the particles arranged in each one?

In a solid, the particles are packed close together.

They stay in their places and just jiggle.

That is why a solid keeps its shape.

In a liquid, the particles are still close together.

But they can slide past each other.

That is why a liquid flows to fit the shape of its container.

In a gas, the particles are far apart.

They move freely in all directions.

That is why a gas spreads out to fill its whole container.

In a solid the particles are packed, in a liquid they slide, and in a gas they are far apart.

Curriculum

Where this fits

British Columbia, Grade 4

Science, Chemistry: phases of matterBC4-SC-05

Next: Heating and Cooling: Particles Speed Up or Slow Down

The outcomes and strands follow the British Columbia curriculum.

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