Which statement defines calorimetry? the conservation of energy a unit of energy that is used when calculating energy exchange a device that is used to measure the heat that is gained or lost during a chemical change the measurement of energy that is given off or absorbed in a physical or chemical process

the measurement of energy that is given off or absorbed in a physical or chemical process

Explanation: Calorimetry is the process of measuring the amount of heat released or absorbed during a chemical reaction.  

It can be found whether a reaction is exothermic or endothermic by knowing the change in heat. This is done by the use of device called calorimeter.

Exothermic reactions are accompanied by release of heat whereas endothermic reactions are accompanied by absorption of heat. Thus by knowing the temperature changes, we get to know whether the heat has been released or absorbed.

The statement that defines calorimetry is the measurement of energy that is given off or absorbed in a physical or chemical process.

The correct statement is C.

Calorimetry is the study or act of determining changes in a body's state variables.

Calorimetry is the science of measuring the heat exchanged with the environment to determine the changes in energy of a system.

Thus, statement C is correct.

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the answer is definitely c.