Question 3 was generated by the first researcher which specified the
factors of heat energy. Students were asked to compare the amount of heat energy of
two objects at different temperatures. The objects were made of the same material and
had different mass. Question 4 (Harrison, Grayson, and Treagust, 1999) asked
students to compare the amount of heat energy of two objects at 0°C in the freezer.
The objects were made of the same material but had different sizes.