Question

Two substances X and Y are both solid at 20 °C. The substances have the same mass and are supplied with the same amount of energy per second. The graph shows how the temperature of each substance varies with time. A student uses information from the graph to make the following statements:

1. Substance X has a higher specific heat capacity than substance Y.
2. Substance Y has a higher specific heat capacity than substance X.
3. Substance X has a higher specific heat capacity than substance Y.

Which of these statements is/are correct?

1. I only
2. I and II only
3. III only
4. I and II only
5. I, II and III

1 mark