Which statement identifies a difference between endothermic and exothermic chemical reactions? (2 points) endothermic reactions store energy and exothermic reactions release energy. endothermic reactions occur faster than exothermic reactions. endothermic reactions create organic matter and exothermic reactions create inorganic matter. endothermic reactions decompose matter and exothermic reactions synthesize matter.

Endothermic reactions store energy and exothermic reactions release energy.

Explanation: A process that requires energy to break the bonds and stores energy in the bonds which are formed in the reaction is an endothermic reaction.

The process in which energy is released when bonds are broken is a exothermic reaction. For example combustion is a exothermic reaction where in initially energy input along with oxygen and wax react to produce heat, carbon dioxide and water.

Thus, the correct answer is: Endothermic reactions store energy and exothermic reactions release energy.

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force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.