Question

please give this answer​

Answer 1

3. Expands more evenly - Mercury

Expands more - Mercury

A better conductor of heat - Mercury

Useful at higher temperatures - Mercury

Useful at lower temperatures - Alcohol

4. Difference between Heat and Temperature

Heat

• The heat of an object is the total energy of all the molecular motion inside that object.
• S.I . Unit - Joule
• Units - Joules, Calories
• Symbol - ' Q '
• It’s a measure of the number of atoms multiplied by the energy possessed by each atom.
• It is has the ability to do work.

Temperature

• Temperature is the measure of the thermal energy or average heat of the molecules in a substance.
• S.I. Unit - Kelvin
• Units - Fahrenheit, Celsius, Kelvin
• Symbol - ' T '
• It is like a level which determines the direction in which the heat will flow. It is related to how fast the molecule within a substance are moving.
• It can be used to measure the degree of heat.