Required practical: measuring energy change: General method

Why is a polystyrene cup placed in a beaker?

For insulation and support

How do you measure the required volume of solution?

Use a measuring cylinder or pipette

How should the thermometer be positioned?

Clamp it in place with the bulb immersed in the liquid

What temperature is measured before the reaction?

The initial temperature of the solution(s)

What do you do after measuring the initial temperature?

Transfer the reagents into the cup

What should you do if a solid reagent is being used?

Add the solution to the cup first

What do you do after adding the reagents?

Stir the mixture

What temperature is measured at the end?

The final temperature