Multiple Choice
Which type of reaction releases a large amount of energy that the cell can use to do work, according to the First Law of Thermodynamics?
8. Thermochemistry
Endothermic & Exothermic Reactions
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Which type of reaction releases energy to the surroundings?
A
Neutralization reaction
B
Endothermic reaction
C
Exothermic reaction
D
Decomposition reaction
Verified step by step guidance1
Understand the types of reactions: In chemistry, reactions can be classified based on energy changes. The main types are exothermic and endothermic reactions.
Define exothermic reactions: Exothermic reactions are chemical reactions that release energy, usually in the form of heat, to the surroundings. This results in an increase in the temperature of the surroundings.
Identify characteristics of exothermic reactions: In an exothermic reaction, the energy required to break the bonds in the reactants is less than the energy released when new bonds are formed in the products.
Compare with other reactions: Neutralization reactions, which occur between an acid and a base, are typically exothermic. Decomposition reactions can be either endothermic or exothermic, depending on the specific reaction. Endothermic reactions absorb energy from the surroundings, leading to a decrease in temperature.
Conclude with the correct answer: Based on the definitions and characteristics, the type of reaction that releases energy to the surroundings is an exothermic reaction.
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