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(Solved): Chemical reactioes occur when molecules or atoms collide, the bonds between atoms are broken, and ne ...



Chemical reactioes occur when molecules or atoms collide, the bonds between atoms are broken, and new bonds are formed. Breaking the bonds of the reactants requires energy; bond formation releases energy. Which of the statements regarding energy changes during a reaction are true? Reactants must collide, with peoper erientation, with energy greater than or equal to the activation energy for a reaction to occur. The activation energy (

E_(2)

) is the energy difference between the energy of the products and the energy of the reactants. The energy of a collihison between atoms or molecules muss be greater than or equal to the activation energy (

E_(N)

) for foods to be broken. Docreasing the temperature decreases the kinetic energy of the reactants, and the reaction goes more slowly. Increasing the amount of reactants increases the number of collisions, and the reaction goes faster. If the eacrgy of the prodocts is lower than the enorgy of the reactants, the reaction is endothermic. When the activation energy is low, the reaction rate is slow.



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