Energy Changes Flashcards
When energy is transferred to the surroundings the reaction is …
Exothermic
When energy is taken in from the surroundings the reaction is …
Endothermic
Chemical reactions can occur only when reacting particles ——- with each other and with sufficient ——
Collide
Energy
The minimum amount of energy that particles must have to react is called …
The activation energy
In an exothermic reaction, the energy of products is
—– than energy of reactants
Lower
In an endothermic reaction, the energy of products is
—– than energy of reactants
Higher
In an exothermic reaction, the energy released from forming new bonds is ——- than the energy needed to break existing bonds
Greater
In an endothermic reaction, the energy released from forming new bonds is less than the energy needed to break existing bonds
Less
