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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?
Correct
Incorrect
Hint
Recall descriptions of states of matter with respect to arrangement and movement of particles and changes of states
Question 2 of 5
2. Question
1 point(s)
Which substance is a solid at 20°C?
Correct
Incorrect
Hint
Recall the 3 states of matter and their interconversion; melting point being the temperature at which a solid changes into liquid
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?
Correct
Incorrect
Hint
Recall change of state from liquid to solid in terms of kinetic particle theory
Question 4 of 5
4. Question
1 point(s)
During which process does the movement of particles decrease?
Correct
Incorrect
Hint
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)
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?
Correct
Incorrect
Hint
Descriptions of the solid, liquid and gaseous states of matter, in terms of arrangement and movement of particles
