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WorksheetsTopic 2.1 Basic Concepts of Matter
Total questions: 8
Worksheet time: 5mins
The process where solid changes into gas is called
Deposition
Condensation
Sublimation
Freezing
The process where gas changes into liquid is called
Sublimation
Boiling
Deposition
Condensation
Which process involved heat energy being absorbed from surroundings?
Deposition
Melting
Sublimation
Condensation
Which process involved heat energy being released to surroundings?
Boiling
Condensation
Sublimation
Freezing
What do you understand about the melting point?
A point at which solid changes to gas
The constant temperature at which a solid changes to gas
A point at which solid changes to liquid
The constant temperature at which a solid changes to liquid
How energy causes a liquid change to gas?
Heat energy is absorbed to overcome the attraction force between liquid particles.
Heat energy is released when gas particles are formed.
Heat energy is absorbed to overcome the attraction force between gas particles.
Heat energy is released when liquid particles are formed.
Why solid A has a higher melting and boiling point than solid B?
The force of attraction between particles in solid A is stronger than in solid B.
The force of attraction between particles in solid A is weaker than in solid B.
More heat energy is needed to overcome the forces of attraction in solid B.
More heat energy is needed to overcome the forces of attraction in solid A.
Substance A has a melting point of 40 °C and boiling point of 75 °C . If you want substance changes from solid to liquid, what would you do?
Heat the substance A until its temperature reaches 75.
Heat the substance A until its temperature reaches 42.
Heat the substance A until its temperature reaches 39.
Heat the substance A until its temperature reaches 76.
