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Solids, liquids and gases

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先生の方へ: Solids, liquids and gases(KS3 Science、Chemistry)向けのすぐ使えるレッスンスライド, 復習ノート, 図解 — レッスンで使うか、生徒がライブゲームとして遊ぶインタラクティブなクラス活動としてトピックを実施できます。

レッスンノート

The Particle Model

  • All matter is made of particles (atoms or molecules).
  • The three states of matter are solid, liquid, and gas.
  • Properties depend on particle arrangement and movement.

Solids

  • Particles are held tightly together in a regular pattern.
  • Particles vibrate around fixed positions.
  • Solids have a definite shape and definite volume.
  • They are dense and cannot be compressed easily.
  • Solids have the least amount of energy.

Liquids

  • Particles are close together but can move past each other.
  • Liquids have a changing shape (they flow) but a fixed volume.
  • They are dense and cannot be compressed easily.
  • Liquids have more energy than solids.

Gases

  • Particles are far apart with very weak forces between them.
  • Gases have no fixed shape and no fixed volume.
  • They can be compressed and have low density.
  • Particles move quickly in random directions at different speeds.
  • Gas pressure is caused by particles colliding with container walls.
  • Gases have the most energy; heating increases particle speed.

Density and Water Exception

  • Solids are usually the most dense state.
  • Water is an exception: liquid water is more dense than ice (solid).
  • Ice floats because it is less dense than liquid water.

Particle arrangement and movement

スライド

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練習問題

無料プレビュー — 63問中8問。すべて見るには登録を。
  1. 1.Which state of matter has particles that are held tightly together in a regular pattern and vibrate around fixed positions?

    Easy
    • ASolid
    • BLiquid
    • CGas
    • DPlasma
  2. 2.Which state of matter can be compressed?

    Easy
    • ASolid
    • BLiquid
    • CGas
    • DBoth solid and liquid
  3. 3.Which state of matter has a definite shape and volume?

    Easy
    • ASolid
    • BLiquid
    • CGas
    • DNone of the above
  4. 4.Which state of matter has the most energy?

    Easy
    • ASolid
    • BLiquid
    • CGas
    • DAll have the same energy
  5. 5.Why does ice float in water?

    Medium
    • AIce is denser than water
    • BIce is less dense than water
    • CIce has a higher temperature than water
    • DIce has more particles than water
  6. 6.What happens to the speed of gas particles when the temperature of a gas is increased?

    Easy
    • AThey move more slowly
    • BThey move more quickly
    • CThey stop moving
    • DThey move at the same speed
  7. 7.Which of the following correctly describes the movement of gas particles?

    Easy
    • AThey vibrate in fixed positions
    • BThey move slowly in the same direction
    • CThey move quickly in random directions
    • DThey slide past each other
  8. 8.A student observes that a substance has no fixed shape but has a fixed volume. Which state of matter is it?

    Easy
    • ASolid
    • BLiquid
    • CGas
    • DPlasma

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