Chemistry - Enthalpy

Front

Define 'Enthalpy'

Back

Energy stored in the chemical bonds in a substance.

Front

How do you calculate Enthalpy of a reaction?

Back

ΔH = ΔH_products - ΔH_reactants

Front

What type of reaction is characterized by the absorption of heat?

Back

Endothermic reaction.

Front

What type of reaction is characterized by the release of heat?

Back

Exothermic reaction.

Front

In an exothermic reaction, where is the energy found?

Back

On the reactant side.

Front

In an endothermic reaction, where is the energy found?

Back

On the product side.

Front

What is the symbol for change in enthalpy?

Back

ΔH.

Front

What does a negative ΔH indicate about a reaction?

Back

The reaction is exothermic.

Front

What does a positive ΔH indicate about a reaction?

Back

The reaction is endothermic.

Front

What is the relationship between enthalpy and temperature in a reaction?

Back

Enthalpy changes can affect the temperature of the system.