Curriculum
Course: Science — Second Preparatory
Login

Curriculum

Science — Second Preparatory

Unit 1: Matter and Energy

0/8

Unit 2: Matter and Chemical Reactions

0/6

Unit 3: Energy Flow in Photosynthesis and Respiration

0/4

Unit 4: Geological Processes

0/4
Quiz

Changes of State — Lesson quiz

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
Cancel Submit
  • Questions count: 6
  • Passing grade: 60%
Start Quiz
1.
What is the name of the change from gas to liquid?
Evaporation
Condensation
Melting
Sublimation
2.
Does the temperature of water rise while it boils at normal atmospheric pressure?
Yes, it rises to 120 °C
Yes, it keeps rising until it all evaporates
No, it stays constant at 100 °C
No, it drops to 0 °C
3.
During melting, is heat absorbed from the surroundings or released by the substance?
Heat is released from the substance to the surroundings
No heat is exchanged during melting
The temperature drops so the substance can melt
Heat is absorbed from the surroundings
4.
Which of these is an example of sublimation?
Solid carbon dioxide (dry ice) turning directly into gas
Wax melting in the sun
Water boiling into steam
Water freezing in a freezer
5.
Calculate the heat needed to melt 0.2 kg of ice at 0 °C, given that the latent heat of fusion is 336 kJ/kg.
1680 kJ
67.2 kJ
6.72 kJ
336 kJ
6.
Why do you feel cold when alcohol evaporates from your skin?
Because alcohol releases heat as it evaporates
Because the skin freezes during evaporation
Because evaporation absorbs heat from the skin
Because evaporation stops heat from moving at all
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6