In this video we are going to answer a question on heating curve of a substance. This was question 2 from the November examination done in the EC province in 2022.
Question 2:
The graph below show a heating curve of a pure substance under standard pressure.
SEE GRAPH IN THE VIDEO OR ON THE THUMNAIL. 👆👆👆👀👀👀👀
2.1 Define the term temperature. (2)
2.2 What is the boiling point of this substance. (1)
2.3 During which time interval/s will the ...
2.3.1 forces of attraction between the particles be at their weakest? (1)
2.3.2 particles vibrate at their fixed positions (1)
2.3.3 average kinetic energy of the particles remain the same. (2)
2.3.4 Give a reason for your answer in question 2.3.3 (2)
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