What equipment is needed for the temperature change practical?

For the temperature change practical, you will need a thermometer, a polystyrene cup, a beaker, and specific chemicals.

To conduct a temperature change practical, several pieces of equipment are necessary. The first is a thermometer, which is used to measure the temperature of the substances before and after the reaction. This is crucial as the change in temperature is the main focus of the experiment.

A polystyrene cup is also needed. This acts as a calorimeter, a device used to measure the heat of chemical reactions or physical changes. Polystyrene is an excellent insulator, which means it prevents heat from escaping, ensuring a more accurate measurement of the temperature change within the cup.

A beaker is another essential piece of equipment. It is used to hold the polystyrene cup and provide stability, preventing it from tipping over during the experiment. The beaker also acts as an additional layer of insulation, further reducing heat loss to the surroundings.

Lastly, you will need specific chemicals for the reaction. The choice of chemicals depends on the aim of the experiment. For example, if you are investigating the heat of neutralisation, you might use an acid and an alkali. If you are studying the heat of displacement, you might use a metal and a solution of a salt of a less reactive metal.

Remember, safety is paramount when conducting any experiment. Always wear safety goggles and a lab coat to protect your eyes and clothing from potential chemical splashes. Also, handle all chemicals with care, as some may be corrosive or harmful.