Multiple Choice
Which statement best describes the energy change in an endothermic reaction?
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8. Thermochemistry
Endothermic & Exothermic Reactions
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Which of the following best describes an endothermic change?
A
A reaction that occurs spontaneously without any energy input.
B
A reaction that produces heat and increases the temperature of the surroundings.
C
A process in which energy is absorbed from the surroundings.
D
A process in which energy is released to the surroundings.
Verified step by step guidance1
Understand the definition of an endothermic process: it is a change or reaction that absorbs energy, usually in the form of heat, from the surroundings.
Recall that in an endothermic process, the system gains energy, which means the surroundings lose energy, often causing a decrease in the temperature of the surroundings.
Contrast this with an exothermic process, where energy is released to the surroundings, increasing their temperature.
Analyze each option given: identify which one describes energy absorption rather than energy release or spontaneous occurrence without energy input.
Conclude that the best description of an endothermic change is 'A process in which energy is absorbed from the surroundings.'
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