Scelta multipla
When water evaporates, it ________ heat energy and ________ the surrounding air.
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8. Thermochemistry
Endothermic & Exothermic Reactions
Scelta multipla
Which term best describes a chemical reaction that absorbs energy in the form of heat from its surroundings?
A
Exothermic reaction
B
Redox reaction
C
Combustion reaction
D
Endothermic reaction
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Understand the meaning of energy flow in chemical reactions: energy can either be released to the surroundings or absorbed from the surroundings during a reaction.
Recall that an exothermic reaction releases heat energy to the surroundings, causing the temperature of the surroundings to increase.
Recognize that an endothermic reaction absorbs heat energy from the surroundings, causing the temperature of the surroundings to decrease.
Note that a redox reaction involves the transfer of electrons but does not specifically describe heat absorption or release.
Identify that a combustion reaction is a type of exothermic reaction where a substance reacts with oxygen to release heat and light.
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