Curriculum
Course: Science — Second Preparatory
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Curriculum

Science — Second Preparatory

Unit 1: Matter and Energy

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Unit 2: Matter and Chemical Reactions

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Unit 3: Energy Flow in Photosynthesis and Respiration

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Unit 4: Geological Processes

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Text lesson

States of Matter

Science — Second Preparatory

States of Matter

Lesson summary

Lesson summary

  • Matter exists in three states solid, liquid and gas.
  • A solid has a fixed shape and fixed volume. Its particles are close together and vibrate about fixed positions.
  • A liquid has a fixed volume and takes the shape of its container. Its particles slide over each other.
  • A gas has no fixed shape or volume, is easily compressed, and its particles spread out quickly.
  • The forces of attraction between particles decide the state of matter. The weaker the forces, the freer the movement.
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