The students were provided a situation that they have stored two pieces of ice, which make of the same material but had different sizes, in the freezer for an hour. Students were asked to compare the temperatures of two pieces of ice and gave reasons to support their answers. Only 19 % of the students could give the correct prediction and explanation that both of them had the same temperature because both of them exchanged heat with the freezer until they were the same temperature with the surroundings. Over half of the students could give the correct prediction but their explanations could not support their answers. They thought that two pieces of ice would reach the same temperature because two pieces of ice made of the same material (16%) and two pieces of ice were in the same state (36%). While 28 % of the students gave the incorrect answer that the temperature of the big ice cube was higher than small one because it could contain more cold than small one. The students were asked to explain the situation why the wrapped dolls in blankets never warm up. Twelve percent of the students held correct understanding that both the dolls and blankets have no heat energy resources and are at the same temperature. About 57% of students identified that the wrapped dolls in blankets never warm up because the blankets were made of material which did not hold heat well; 13 % thought that blankets were poor conductors and 5% thought that the blankets used were probably poor insulators.