Endothermic and Exothermic Assessment

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings, resulting in a decrease in temperature.

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases heat to its surroundings, resulting in an increase in temperature.

Front

What does a negative enthalpy change indicate?

Back

A negative enthalpy change indicates that the reaction is exothermic, meaning energy is released.

Front

What does a positive enthalpy change indicate?

Back

A positive enthalpy change indicates that the reaction is endothermic, meaning energy is absorbed.

Front

Give an example of an endothermic process.

Back

Baking bread and cooking an egg are examples of endothermic processes.

Front

Give an example of an exothermic process.

Back

Burning wood and respiration are examples of exothermic processes.

Front

In an exothermic reaction, heat is...

Back

given out.

Front

In an endothermic reaction, heat is...

Back

taken in.

Front

What is the role of energy in chemical reactions?

Back

Energy is required to break bonds in reactants and is released when new bonds are formed in products.

Front

What is the formula for calculating enthalpy change?

Back

Enthalpy change (ΔH) = H(products) - H(reactants).