Suppose two chemicals are reacted together. It takes 1000 kJ of energy to break the bonds of the reactants and 850 kJ of energy are released by the formation of the products. Which statement is true about the reaction?

A. The reaction is exothermic.
B. The reaction will need an external energy source to proceed.
C. The reaction will give off 150 kJ of energy.
D. The reaction will likely be explosive.

Question

Suppose two chemicals are reacted together. It takes 1000 kJ of energy to break the bonds of the reactants and 850 kJ of energy are released by the formation of the products. Which statement is true about the reaction?


 A. The reaction is exothermic. 
 B. The reaction will need an external energy source to proceed. 
 C. The reaction will give off 150 kJ of energy. 
 D. The reaction will likely be explosive.

michele_laino · Answer

hint:
those 1,000 kJoules of energy are coming from the surrounding environment