Calorimetry — Important Questions

Mass of the substance, Change in temperature, Nature of the material

The quantity of heat depends on three factors: mass (more mass needs more heat), change in temperature (greater change needs more heat), and nature of material (different materials have different specific heat capacities). Color and container shape do not affect heat quantity.

Heat lost by hot body = Heat gained by cold body

The principle of calorimetry states that when two bodies at different temperatures are brought in contact, heat flows from the hot body to the cold body until thermal equilibrium is reached. The heat lost by the hot body equals the heat gained by the cold body (assuming no heat loss to surroundings).

Copper

Calorimeters are commonly made of copper because it is a good conductor of heat and has low specific heat capacity. This ensures rapid temperature equalization and minimal heat absorption by the calorimeter itself. The surfaces are polished to reduce radiation losses.

Used in car radiators for cooling, Helps maintain moderate climate near seashores, Animals maintain body temperature

High specific heat capacity of water means it can absorb large amounts of heat without much temperature change. This makes it ideal for cooling systems, climate moderation near water bodies, and temperature regulation in living organisms. It doesn't affect the boiling point significantly.