Question 2
Kinetic Theory and States of MatterUse the graph below to answer questions 1 and 2.
How long does it take all the solid to melt?
- A.2.5 mins.
- B.6.0 mins.
- C.1.0 min.
- D.3.0 mins.
Show the answer and explanation
Answer: A (2.5 mins.)
Explanation
Melting happens along the first flat part of the graph, which ends at 2.5 minutes; after that the substance is all liquid and its temperature rises.