Calorimetry Practice

Front

What is calorimetry?

Back

Calorimetry is the science of measuring the heat of chemical reactions or physical changes, as well as heat capacity.

Front

What is the principle of conservation of energy in calorimetry?

Back

The principle states that energy cannot be created or destroyed, only transformed from one form to another. In calorimetry, the heat lost by a hot object equals the heat gained by a cold object.

Front

Define specific heat capacity.

Back

Specific heat capacity is the amount of heat required to raise the temperature of 1 kg of a substance by 1 °C.

Front

What is the formula for calculating heat transfer?

Back

Q = mCΔT, where Q is heat transfer, m is mass, C is specific heat capacity, and ΔT is the change in temperature.

Front

How do you calculate the heat of combustion?

Back

The heat of combustion can be calculated using the formula: Q = C × ΔT, where C is the heat capacity of the calorimeter and ΔT is the change in temperature.

Front

What happens to heat when a hot object is placed in a cooler environment?

Back

The hot object loses heat to the cooler environment until thermal equilibrium is reached.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact do not exchange heat, meaning they are at the same temperature.

Front

How many calories are needed to raise the temperature of 1 g of water by 1 °C?

Back

1 calorie.

Front

What is the heat capacity of water?

Back

The heat capacity of water is approximately 4.18 J/g°C.

Front

What is the significance of a bomb calorimeter?

Back

A bomb calorimeter is used to measure the heat of combustion of a substance under constant volume.