What is the definition of bond enthalpy?

What is the definition of average bond enthalpy?

What does the symbol ‘Σ’ mean?

What calculation is used to work out average bond enthalpy?

What is the process when bonds are broken?

What is the process when bonds are made?

What happens, in term of energy, when bonds are broken?

What happens, in term of energy, when bonds are made?

What type of enthalpy change is formed when an exothermic reaction takes place?

What type of enthalpy change is formed when an endothermic reaction takes place?

How can enthalpy change be predicted?

Why is it difficult to measure the enthalpy change for an incomplete combustion reaction?

Using the following enthalpy data, find the enthalpy of combustion of methane.

Using the following enthalpy data, find the enthalpy of combustion of propane.

Using the following enthalpy data, find the enthalpy of combustion of ethene.

Using the following enthalpy data, find the enthalpy of combustion of propene.

Using the following enthalpy data, find the enthalpy of combustion of butane.

Using the following enthalpy data, find the enthalpy of combustion of butene.