CIE iGCSE Co-Ordinated Science P2.2.2 Melting, boiling and evaporation Exam Style Questions Paper 1
Question
What are used as the fixed points on the Celsius scale of temperature?
▶️Answer/Explanation
Ans :A
Question
What happens to the temperature of a substance as it is melting and as it is boiling?
▶️Answer/Explanation
Ans : D
Question
A bowl of water is placed on a balance outside where it is sunny and windy. The reading on the balance is recorded.
After some time, the reading on the balance is less than the original reading.
Which statement explains why the reading is less?
(A) The water has become cooler.
(B) The water has become warmer.
(C) The water has condensed.
(D) The water has evaporated.
▶️Answer/Explanation
Ans: D
Question
A sample of liquid cools for 20 minutes. Its temperature is recorded every 2 minutes.
The results are shown.
How should the sample be described at the end of 18 minutes?
(A) all liquid
(B) all solid
(C) in the process of boiling
(D) in the process of solidifying
▶️Answer/Explanation
Ans: A