Learners conducted an experiment to determine the cooling.curve of chlorine. They cooled a cylinder that contained chlorine and recorded the temperature (measured using infrared gun thermometer) over a period of time. The results for the experiment are shown in the graph below. Temperature C -101 -34 0 26 38 time(minutes) 2.1 Define the term Temperature. (2) 2.2 Use the graph to identify the PHASE/PHASE CHANGE during the following stages. 2.2.1.0 to 9 minutes. (2) 2.2.2 26 to 38 minutes. (2) 2.2.3 beyond 38 minutes. (1)
