How to use a thermometer
1. make sure that your thermometer covers the right temperature range.
2. the bulb must not touch the container and must be at the centre of the substance.
3. never use a thermometer to stir a liquid. Use a stirring rod.
4. read the temperature to nearest ฝ degree , after the height of the mercury or alcohol remains steady.
5. where reading the temperature make sure your eye is level with the height of the liquid
In the thermometer.