GCSEScienceOCRCombined Science A (Gateway)PhysicsExam QuestionsMatterThe Particle Model

The Particle Model (OCR GCSE Combined Science A (Gateway): Physics): Multiple Choice Questions

Exam code: J250

50 mins15 questions

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The Particle Model

1
1 mark

Different states of matter have different densities.

Which of the following shows the states of matter in density order, starting with the lowest density?

  • Solid ā€“ liquid ā€“ gas

  • Solid ā€“ gas ā€“ liquid

  • Gas ā€“ liquid ā€“ solid

  • Liquid ā€“ gas ā€“ solid

Choose your answer

2
1 mark

A sealed boiling tube contains gas. The boiling tube is heated.

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What happens?

  • The particles in the gas evaporate.

  • The particles in the gas expand.

  • The particles in the gas move faster.

  • The particles in the gas move slower.

Choose your answer

3
1 mark

Which diagram shows the correct model of an atom?

Four diagrams labelled A to D illustrating atomic models with notes indicating electrons, protons, and neutrons.

    Choose your answer

    4
    1 mark

    Which of the following statements gives the correct definition of density?

    • The mass per unit volume of a material

    • The force per unit area acting on a material

    • The mass per unit area of a material

    • The force per unit volume of a material

    Choose your answer

    5
    1 mark

    An object has a volume of 1.5 m3 and a mass of 3.0 kg.

    What is the density of the object?

    Use the equation: density = mass Ć· volume

    • 0.5 kg/m3

    • 2.0 kg/m3

    • 4.5 kg/m3

    • 6.0 kg/m3

    Choose your answer

    6
    1 mark

    A graduated syringe contains air at room temperature.

    The syringe is put in a freezer to cool it down.

    When it is removed from the freezer, the piston has moved inwards.

    q6-paper3-specimen-ocr-gcse-physics

    The density of the air in the syringe when cooled is 2.4 kg/m3.

    What was the density of the air at room temperature?

    • 0.6 kg/m3

    • 1.2 kg/m3

    • 2.4 kg/m3

    • 4.8 kg/m3

    Choose your answer

    7
    1 mark

    The atomic model has changed over time.

    Why did the model need to change over time?

    • Models only have a finite lifetime

    • Computers were invented

    • The older models could not explain new evidence

    • Peer review

    Choose your answer

    8
    1 mark

    Which diagram shows the correct arrangement of particles in a liquid?

    Four diagrams labelled A, B, C, and D show varying densities of circles inside rectangles, with A most dense and C least dense.

      Choose your answer

      9
      1 mark

      A piece of metal has a volume of 2.0 Ɨ 10-5 m3.

      The density of the metal is 8.0 Ɨ 103 kg/m3.

      What is the mass of the metal?

      • 2.5 Ɨ 10-3 kg

      • 4.0 Ɨ 10-2 kg

      • 1.6 Ɨ 10-1 kg

      • 1.6 Ɨ 103 kg

      Choose your answer

      10
      1 mark

      Which of the following represents the magnitude of the typical radius of an atom?

      • 1.6 Ɨ 10ā€“19 m

      • 2.8 Ɨ 10ā€“15 m

      • 1 Ɨ 10ā€“10 m

      • 10 Ɨ 10ā€“10 m

      Choose your answer