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 heat of combustion?

Back

The heat of combustion is the amount of energy released when a substance is burned in the presence of oxygen.

Front

Define specific heat capacity.

Back

Specific heat capacity is the amount of heat required to raise the temperature of one gram of a substance by one degree Celsius.

Front

What is a bomb calorimeter?

Back

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

Front

What is the formula to calculate heat (q)?

Back

q = mcΔT, where m is mass, c is specific heat capacity, and ΔT is the change in temperature.

Front

What happens to thermal energy when two objects at different temperatures are in contact?

Back

Thermal energy flows from the object at a higher temperature to the object at a lower temperature until thermal equilibrium is reached.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact no longer transfer heat to each other, having reached the same temperature.

Front

What is the principle of conservation of energy in calorimetry?

Back

The principle states that energy cannot be created or destroyed, only transferred; thus, the heat lost by one substance equals the heat gained by another.

Front

What is the significance of negative heat of combustion values?

Back

Negative heat of combustion values indicate that the reaction is exothermic, meaning heat is released during the combustion process.

Front

How does the heat capacity of a calorimeter affect measurements?

Back

The heat capacity of a calorimeter must be known to accurately calculate the heat of a reaction, as it absorbs some of the heat released.