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Atoms and Matter Assessment

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Atoms and Matter Assessment

Answer each question. Use scientific vocabulary where you can. For questions that ask you to explain, include a reason as well as your answer.

Part A: Atoms and particles

Use what you know about the structure of atoms and the particle model of matter.

1.Which two types of particles are found in an atom’s nucleus?
  • Electrons and protons
  • Protons and neutrons
  • Neutrons and electrons
  • Only protons
2.An atom has 8 protons. Which element is it, and what does the number of protons tell you?
3.Complete the statements: (a) An electron has a charge. (b) A neutron has a charge. (c) Protons are found in the .

Part B: States of matter

Think about how particles are arranged and move in solids, liquids and gases.

4.Using your knowledge of the particle model, which state of matter has particles far apart and spread throughout its container? Describe one way the particles in a liquid differ from those in a solid.
5.Mere puts a sealed bottle of air in a warm place. What happens to the movement of the air particles as the air warms?
  • They move more slowly
  • They move faster on average
  • They stop moving
  • They turn into atoms
6.A puddle disappears on a sunny day. Name the change of state and explain what happens to the water particles.
7.True or false: When ice melts, its particles disappear and new particles are made.
TrueFalse

Part C: Apply your understanding

Use evidence and fair-test thinking to explain what is happening.

8.A metal spoon feels colder than a wooden spoon that has been in the same kitchen. Both spoons are at room temperature. Explain why the metal can feel colder without being at a lower temperature.
9.A student wants to test whether sugar dissolves faster in warm water than in cold water. Name one factor to keep the same in both tests, and state what the student should measure.
10.Explain why a gas can be squeezed into a smaller space much more easily than a liquid. Use the word particles in your answer.

3 printable pages

  • Year 7 atoms and matter assessment with a matter detectives briefing and an illustrated atom model.

    Page 1

  • Particle arrangements for comparing solids, liquids and gases, plus heating and state-change questions.

    Page 2

  • Density investigation using labelled objects floating, sinking and suspended in water, followed by fair-testing tasks.

    Page 3

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