Question

Suppose two chemicals are reacted together. It takes 600 kJ of energy to break the bonds of the reactants and 950 kJ of energy are released by the formation of the products. Which statement is true about the reaction?
Answer The reaction will give off 350 kJ of energy.
The reaction is endothermic.
The reaction will need an external energy source to proceed.
The reaction will have a positive ∆H value