Multiple Choice
Which of the following best explains why cooking is considered an endothermic process?
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8. Thermochemistry
Endothermic & Exothermic Reactions
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Which of the following best explains what makes a chemical reaction endothermic?
A
The reaction releases heat to its surroundings.
B
The reaction produces light as a product.
C
The reaction occurs only at high temperatures.
D
The reaction absorbs heat from its surroundings.
Verified step by step guidance1
Understand the definition of an endothermic reaction: it is a chemical reaction that absorbs heat from its surroundings during the process.
Recall that in an endothermic reaction, the system gains energy, which means heat flows into the system, causing the surroundings to lose heat.
Contrast this with an exothermic reaction, where heat is released to the surroundings, making the surroundings warmer.
Recognize that producing light or occurring only at high temperatures are not definitive characteristics of endothermic reactions; the key factor is the heat absorption.
Therefore, the best explanation for an endothermic reaction is that it absorbs heat from its surroundings.
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