Grade 9 - Solids, Liquids & Gases

Test yourself on Grade 9 - Solids, Liquids & Gases

• Alex is conducting an experiment to find the specific heat capacity of water. She finds that 90 kJ were needed to raise the temperature of 350 g of water from 25°C to 75°C. What equation should she use to calculate the specific heat capacity?

• Alex now takes some ice from the freezer and heats it. She monitors its temperature over time, and the following graph is produced. What phenomenon explains the points in time where energy is being supplied to the ice cube but there is no temperature change?

• Which point on the graph corresponds to the latent heat of fusion for the ice cube?

• Which point on the graph corresponds to the latent heat of vaporisation for the ice cube?