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Question 1 of 5
1. Question
1 point(s)Some students are asked to describe the differences between gases and liquids.
Three of their suggestions are:
- gas molecules are further apart than liquid molecules
- gas molecules are further apart than liquid molecules
- gas molecules move freely but liquid molecules vibrate around fixed positions
Which suggestion or suggestions are correct?
CorrectIncorrectHint
Recall descriptions of states of matter with respect to arrangement and movement of particles and changes of states
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Question 2 of 5
2. Question
1 point(s)Which substance is a solid at 20°C?
CorrectIncorrectHint
Recall the 3 states of matter and their interconversion; melting point being the temperature at which a solid changes into liquid
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Question 3 of 5
3. Question
1 point(s)What happens to the molecules in a liquid when it turns into a solid at its freezing point?
CorrectIncorrectHint
Recall change of state from liquid to solid in terms of kinetic particle theory
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Question 4 of 5
4. Question
1 point(s)During which process does the movement of particles decrease?
CorrectIncorrectHint
Describe the solid, liquid and gaseous states of matter in terms of arrangement, movement and forces of the particles and their interconversion (change of states)
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Question 5 of 5
5. Question
1 point(s)The table gives data about four substances.
In which substance are the particles arranged randomly at room temperature?
CorrectIncorrectHint
Descriptions of the solid, liquid and gaseous states of matter, in terms of arrangement and movement of particles
