Quiz
Particulate nature of matter
5 days ago by
elainetpy_58522
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  • Question 1
    60 seconds
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    Q.

    In which changes do the particles move further apart?

    answer choices

    W and X

    W and Z

    X and Y

    Y and Z

  • Question 2
    60 seconds
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    Q.

    Which change of state takes place during evaporation?

    answer choices

    gas to liquid

    liquid to gas

    liquid to solid

    solid to gas

  • Question 3
    60 seconds
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    Q.

    A sugar cube is dropped into a hot cup of tea.

    The tea is not stirred.

    Which statement explains why the tea becomes sweet?

    answer choices

    The heated water molecules penetrate the sugar cube.

    The hot tea causes the sugar to melt.

    The sugar cube dissolves and its molecules diffuse.

    The sugar molecules get hot and evaporate.

  • Question 4
    60 seconds
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    Q.

    Which statement is an example of diffusion?

    answer choices

    A kitchen towel soaks up some spilt milk.

    Ice cream melts in a warm room.

    Pollen from flowers is blown by the wind.

    The smell of cooking spreads through a house.

  • Question 5
    60 seconds
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    Q.

    A few drops of perfume were spilt on the floor. A few minutes later the perfume could be smelt a few metres away.

    Which two processes had taken place?

    answer choices

    distillation and condensation

    distillation and diffusion

    evaporation and condensation

    evaporation and diffusion

  • Question 6
    60 seconds
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    Q.

    ‘Particles moving very slowly from an area of high concentration to an area of low

    concentration.’

    Which process is being described above?

    answer choices

    a liquid being frozen

    a solid melting

    a substance diffusing through a liquid

    a substance diffusing through the air

  • Question 7
    60 seconds
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    Q.

    In which substance are the particles close together and slowly moving past each other?

    answer choices

    air

    ice

    steam

    water

  • Question 8
    60 seconds
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    Q.

    The diagram shows how the molecules in the exhaust gases diffuse into the air.

    Which statement describes what happens to these molecules next?

    answer choices

    The molecules fall to the ground because they are heavier than air molecules.

    The molecules go back together as they cool.

    The molecules spread further into the air.

    The molecules stay where they are.

  • Question 9
    60 seconds
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    Q.

    A gas jar of bromine vapour and a gas jar of air are set up as shown in diagram 1.

    The glass slide is removed. Diagram 2 shows the appearance of the gas jars after one hour.


    Which statement explains why the bromine and air mix together?

    answer choices

    Bromine is denser than air.

    Bromine is lighter than air.

    Bromine molecules moved upwards and molecules in air moved downwards.

    Molecules in bromine and air moved randomly.

  • Question 10
    60 seconds
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    Q.

    A liquid is heated until it boils.

    Which result shows that the liquid in the test-tube is pure water?

    answer choices

    Condensation forms at the top of the test-tube.

    Steam is produced.

    The thermometer reads 100 °C.

    There is nothing left behind in the test-tube.

  • Question 11
    60 seconds
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    Q.

    Small crystals of purple KMnO4 (Mr = 158) and orange K2Cr2O7 (Mr = 294) were placed at the

    centres of separate petri dishes filled with agar jelly. They were left to stand under the same

    physical conditions.

    After some time, the colour of each substance had spread out as shown.


    The lengths of the arrows indicate the relative distances travelled by particles of each substance.

    Which statement is correct?

    answer choices

    Diffusion is faster in dish 1 because the mass of the particles is greater.

    Diffusion is faster in dish 2 because the mass of the particles is greater.

    Diffusion is slower in dish 1 because the mass of the particles is smaller.

    Diffusion is slower in dish 2 because the mass of the particles is greater.

  • Question 12
    60 seconds
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    Q.

    Pure water has a boiling point of 100 °C and a freezing point of 0 °C.

    What is the boiling point and freezing point of a sample of aqueous sodium chloride?

    answer choices

    boiling point / °C 98. freezing point / °C. –2

    boiling point / °C 98. freezing point / °C. 2

    boiling point / °C 102 freezing point / °C. –2

    boiling point / °C 102 freezing point / °C. 2

  • Question 13
    60 seconds
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    Q.

    Which process causes the greatest increase in the distance between particles?

    answer choices

    condensation

    freezing

    melting

    sublimation

  • Question 14
    60 seconds
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    Q.

    Which statement describes sublimation?

    answer choices

    Particles moving slowly past each other speed up and move further apart.

    Particles vibrating next to each other become mobile and move slowly past each other.

    Particles vibrating next to each other start to move rapidly and move further apart.

    Rapidly moving particles slow down and move closer together.

  • Question 15
    60 seconds
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    Q.

    The apparatus shown is set up. After 20 minutes a white ring of ammonium chloride is seen at

    position Y.


    Which statement about the molecules of ammonia and hydrogen chloride is correct?

    answer choices

    Molecules in ammonia have a larger Mr than molecules of hydrogen chloride and so they

    move more slowly.

    Molecules in ammonia have a larger Mr than molecules of hydrogen chloride and so they

    move more quickly.

    Molecules in ammonia have a smaller Mr than molecules of hydrogen chloride and so they

    move more slowly.

    Molecules in ammonia have a smaller Mr than molecules of hydrogen chloride and so they

    move more quickly.

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