Here is the main points that I had covered in class today.
Make measurement of temperature and use appropriate units.
Make precise and accurate reading.
Practical skills.
Please take note of the danger of using mercury thermometer:
Mercury is POISONOUS !!!!!!
Mercury poisoning has been linked to •nervous system disorders (include impaired vision, speech, hearing and coordination. •Kidney damage •Liver damage •Impaired childhood developmentDo not •Inhale mercury vapour. •Swallow mercury. •Come into skin contact with mercury •Come into eye contact with mercury
Safety measures in using liquid-in-glass thermometer •Do not use the thermometer as a stirrer. •Do not place the bulb of the thermometer on a surface that has a high temperature, such as the base of a beaker placed over a heating flame. •Do not use the thermometer to measure temperature that is higher or lower than what it is designed to measure. •If the thermometer breaks, do not touch the glass or mercury as mercury is poisonous.
