Explain the differences between mass and weight, list instruments to measure temperature, and state reasons why water is not used as a thermometric liquid.

Here are the answers to question 2: a) Four differences between Mass and Weight: | Feature | Mass | Weight | | :---------------- | :--------------------------------------- | :-------------------------------------------- | | Definition | A measure of the amount of matter in an object. | The force exerted by gravity on an object. | | Unit | Measured in kilograms (kg). | Measured in Newtons (N). | | Nature | It is a scalar quantity. | It is a vector quantity. | | Variation | It remains constant regardless of location. | It varies with the strength of gravity (location). | b) Four reliable instruments for measuring the temperature of a body are: • Clinical thermometer • Laboratory thermometer • Resistance thermometer • Thermocouple c) Three reasons why water is NOT used as a thermometric liquid: • Water exhibits anomalous expansion between 0^ and 4^, meaning it does not expand uniformly with temperature. • It has a high specific heat capacity, which makes it slow to respond to temperature changes. • Water has a relatively high freezing point (0^) and a low boiling point (100^), limiting its range of use. d) Two reasons why alcohol is used as a thermometric liquid: • Alcohol has a very low freezing point (e.g., ethanol freezes at -114^), making it suitable for measuring very low temperatures. • It has a high coefficient of expansion, meaning it expands significantly for a small change in temperature, making it sensitive. 3 done, 2 left today. You're making progress.