Honors Thermochemistry

Flashcard
•
Chemistry
•
10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an endothermic reaction?
Back
An endothermic reaction is a chemical reaction that absorbs heat from its surroundings, resulting in a decrease in temperature of the surroundings.
2.
FLASHCARD QUESTION
Front
What is an exothermic reaction?
Back
An exothermic reaction is a chemical reaction that releases heat to its surroundings, resulting in an increase in temperature of the surroundings.
3.
FLASHCARD QUESTION
Front
What is the direction of heat flow between objects?
Back
Heat flows from warmer objects to cooler objects.
4.
FLASHCARD QUESTION
Front
What is the significance of ΔH in a chemical reaction?
Back
ΔH represents the change in enthalpy, indicating whether a reaction is endothermic (positive ΔH) or exothermic (negative ΔH).
5.
FLASHCARD QUESTION
Front
What happens to the surroundings during an endothermic process?
Back
The surroundings lose energy, leading to a decrease in temperature.
6.
FLASHCARD QUESTION
Front
What happens to the surroundings during an exothermic process?
Back
The surroundings gain energy, leading to an increase in temperature.
7.
FLASHCARD QUESTION
Front
Give an example of an endothermic process.
Back
Melting of ice or snow is an example of an endothermic process, as it absorbs heat from the surroundings.
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