1.1. In a car boot sale a student sees what the seller says is a model soldier made from copper. The student buys the model, hoping that it is really made from gold.

At Science Club the student is allowed to investigate their theory.

Describe how the volume of the model could be measured.

You may use a diagram if you wish.

1.2. The mass of the model is 625 g and the volume is 72 cm³.

The densities of various metals commonly used in model-making are:

By comparison with values in the data table, discuss the student's findings and whether the model is made from either copper or gold.

1.3. Another student decides to find the density of a table-tennis ball using the same apparatus.

 Discuss a change the student have to make before making their measurements.