00:01
In this question, we are given five statements and we have to determine whether they are true or false.
00:08
So in the first statement, we are given that when we compute the amount of heat that is necessary for a phase change to occur, such as when water changes from liquid into steam, one does not need to enter a temperature value in the question.
00:31
So we know that delta q is equals to ms delta t where s is the specific heat and delta t is the temperature.
00:44
Hence this statement is true.
00:48
Now in the second statement we are given that when we compute the amount of heat or energy that is transferred into a system and which is not involved in any phase change we need.
01:02
The initial and final temperatures in the calculations.
01:07
So since delta q is m into s into delta t hence we are required to enter the initial and the final temperatures.
01:22
So this statement is also true.
01:27
Now for the third statement we are given that when the water ice initially at 0 degrees celsius melts into liquid water at 0 degrees celsius it is an example of phase change.
01:44
So ice to water so we can call it a phase change...