Endothermic/exothermic reactions

Flashcard
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Science
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What are endothermic reactions?
Back
Reactions that absorb energy from their surroundings, usually in the form of heat.
2.
FLASHCARD QUESTION
Front
What are exothermic reactions?
Back
Reactions that release energy to their surroundings, usually in the form of heat.
3.
FLASHCARD QUESTION
Front
What does 'endo' mean in the context of chemical reactions?
Back
It means 'in' or 'absorbed'.
4.
FLASHCARD QUESTION
Front
What does 'exo' mean in the context of chemical reactions?
Back
It means 'out' or 'released'.
5.
FLASHCARD QUESTION
Front
Give an example of an endothermic reaction.
Back
Photosynthesis: @@6 ext{CO}_2 + 6 ext{H}_2 ext{O} + ext{Energy} ightarrow ext{C}_6 ext{H}_{12} ext{O}_6 + 6 ext{O}_2@@.
6.
FLASHCARD QUESTION
Front
Give an example of an exothermic reaction.
Back
Combustion of hydrogen: @@ ext{O}_2(g) + 2 ext{H}_2(g) ightarrow 2 ext{H}_2 ext{O}(g) + ext{Energy}@@.
7.
FLASHCARD QUESTION
Front
What is the energy change in an exothermic reaction?
Back
Energy is released to the surroundings.
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