Physics and Practical Skills Quiz

Define the term 'density' and state its SI unit.

Describe how the arrangement of particles differs between solids, liquids, and gases.

Explain why gases can be compressed more easily than solids.

Calculate the density of a material with a mass of 500 g and a volume of 250 cm³.

Describe the changes in particle energy during melting.

Explain the process of sublimation with an example.

A student heats a substance from solid to gas. Sketch a temperature-time graph for this process.

Explain why the temperature remains constant during a change of state.

Compare the energy of particles in a solid and a gas.

Describe how internal energy changes when a substance is heated.