Endothermic and exothermic

Front

What is an exothermic reaction?

Back

A chemical reaction that releases heat energy to its surroundings.

Front

What is an endothermic reaction?

Back

A chemical reaction that absorbs heat energy from its surroundings.

Front

How does heat flow between objects?

Back

Heat flows from warmer objects to cooler objects.

Front

What does a higher temperature indicate about molecular motion?

Back

Higher temperatures indicate faster motion of molecules.

Front

What is temperature a measure of?

Back

Temperature is a measure of the average kinetic energy of the individual particles in an object.

Front

What is the heat of vaporization?

Back

The amount of heat needed to change 1 gram of a substance from the liquid phase to the gas phase.

Front

What is the difference between heat and temperature?

Back

Heat is the energy transferred between objects due to a temperature difference, while temperature is a measure of the average kinetic energy of particles.

Front

What is the significance of the heat of fusion?

Back

The heat of fusion is the amount of heat required to change a substance from solid to liquid at its melting point.

Front

What happens to the temperature of a substance during a phase change?

Back

The temperature remains constant during a phase change, even though heat is being added or removed.

Front

What is specific heat capacity?

Back

Specific heat capacity is the amount of heat required to raise the temperature of 1 gram of a substance by 1 degree Celsius.