# High School Physics : Understanding Enthalpy

## Example Questions

### Example Question #1 : Understanding Enthalpy

Enthalpy is a measure of __________.

total energy lost in heat transfer

total energy of a thermodynamic system

how easily something changes temperature

the conversion of energy to heat

total work done by a thermodynamic system

total energy of a thermodynamic system

Explanation:

Enthalpy, or , is the total energy of a thermodynamic system. Similar to how mechanical energy can change during mechanical processes, involving changing distances of velocities, enthalpy will increase or decrease with changes made to the thermodynamic state of the system. It is simply a measure for a different form of energy.

### Example Question #2 : Understanding Enthalpy

An ice cube melts into water. While it is melting, what is the temperature of the mixture doing?

It remains constant while melting.

The ice part of the mixture is colder than the water part.

The temperature of the mixture steadily decreases while melting.

The temperature fluctuates depending upon the point at which you measure it.

The temperature of the mixture steadily increases while melting.