Question

1. Mention all the advantages of using mercury
in thermometers.
2. Mention some important effects of heat.
3. Differentiate between the following:
(a) Expansion in solids, liquids and gases
(b) Freezing point and absolute zero
(c) Laboratory and clinical thermometers
(d) Celsius and Kelvin scales
(e) Thermal expansion and contraction
4. Discuss how can you use a laboratory
thermometer correctly to measure the
temperature of a chemical.​

Answer 1

Answer:

1. It does not stick to the glass tube.

It expands on providing heat to it.

It has lower freezing point and higher boiling point.

It is a shining metal and when it expands, the expansion can be easily seen.

2.The important effects of heat on an object are listed below:

Raises the temperature.

Increases volume.

Changes state.

Brings about chemical action.

Changes physical properties.