Bond Energy Quiz

The temperature change during the reaction

The energy required to break a mole of bonds in gaseous molecules

The pressure exerted by the reaction

The volume change during the reaction

Combustion of wood

Dissolving salt in water

Freezing of water

Burning of natural gas

Higher than the energy of the reactants

Lower than the energy of the reactants

Equal to the energy of the reactants

Unchanged from the energy of the reactants

The reaction releases heat to the surroundings

The reaction absorbs heat from the surroundings

The reaction does not involve heat exchange

The reaction only occurs at high temperatures

It increases the bond energy of reactants

It decreases the bond energy of products

It lowers the activation energy of the reaction

It increases the overall energy of the reaction

It is the energy released during the reaction

It is the energy absorbed during the reaction

It is the minimum energy required to initiate the reaction

It is the energy required to complete the reaction

Endothermic

Exothermic

Neither endothermic nor exothermic

Both endothermic and exothermic

200 kJ/mol released

200 kJ/mol absorbed

800 kJ/mol released

800 kJ/mol absorbed

Ice melting into water

Water vapor condensing into liquid water

Salt dissolving in water

Water boiling into steam

It decreases

It increases

It remains constant

It fluctuates unpredictably