Multiple Choice
During an endothermic reaction, what typically happens to the temperature of the surroundings?
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8. Thermochemistry
Endothermic & Exothermic Reactions
Multiple Choice
Which of the following processes occurs as an ice cube cools a drink?
A
The ice releases heat to the drink and undergoes freezing, an exothermic process.
B
The drink releases heat to the ice, causing the ice to melt, an exothermic process.
C
The drink absorbs heat from the ice, causing the ice to evaporate, an exothermic process.
D
The ice absorbs heat from the drink and undergoes melting, an endothermic process.
Verified step by step guidance1
Understand the physical process involved when an ice cube cools a drink: the ice cube absorbs heat from the warmer drink, causing a temperature change.
Recall that melting (fusion) is the phase change from solid to liquid, which requires energy input; this means melting is an endothermic process because the ice absorbs heat.
Recognize that the drink loses heat to the ice, which causes the ice to melt; the heat transfer is from the drink (higher temperature) to the ice (lower temperature).
Identify that freezing is the opposite process of melting and is exothermic, but it does not occur when ice cools a drink because the ice is already solid and melting instead.
Conclude that the correct description is: the ice absorbs heat from the drink and undergoes melting, an endothermic process.
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