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Unit 2: States of matter, atoms and compounds

Grade 6 Unit 2 – Assignment: States of matter, atoms and compounds

5 min read Lesson 8 of 8 Unit quiz

  • Grade 6, Unit 2: States of matter, atoms and compounds
  • Answer in full sentences and draw diagrams where they make your answer clearer.
  1. Draw the particles in a solid, a liquid and a gas, and describe how the particles move in each.
  2. Explain what happens to the particles when a solid melts and when a liquid evaporates.
  3. Explain what an atom is, and explain what happens when two or more atoms join together.
  4. Explain the difference between an element and a compound, and give two examples of each.
  5. Name the elements in water, in carbon dioxide and in sodium chloride.
  6. Explain why the particles in a gas fill the whole container but the particles in a liquid do not.
  7. A student leaves a glass of water on a windowsill for a week and the water level falls. Explain what happened to the water.

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