Chemistry
Grade-8
Easy
Question
When an exothermic reaction occurs, the reaction mixture gives out heat. This is because:
- Products are less stable than reactants
- More energy is released when the new bonds are formed than the bond breaks in the reactants
- The temperature becomes uncontrollable, so it is needed to give out energy(heat)
- Products and reactant are unstable.
Hint:
In exothermic reactions, energy is either released in the form of heat or light.
The correct answer is: More energy is released when the new bonds are formed than the bond breaks in the reactants
- A chemical reaction that releases energy is called exothermic. In an exothermic reaction, more energy is released in forming bonds within the products than is expended in breaking bonds within the reactants.
- An exothermic reaction is accompanied by an increase in the temperature of the reaction mixture.
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