IGCSE Exothermic and Endothermic Reactions
Authored by Cheng Yoke Wah
Chemistry, Science
9th - 11th Grade
Used 93+ times
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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What term is given to a reaction that releases heat energy to the surroundings?
ectothermic
endothermic
exothermic
ecstatic
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is an example of an exothermic reaction?
photosynthesis
melting
electrolysis
burning
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When magnesium reacts with acid, the temperature rises from 25°C to 51°C. This shows that the reaction is
ectothermic
endothermic
exothermic
ecstatic
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In this energy profile, the products have a ................ energy level than the reactants. Therefore, this is an ............ reaction.
higher.....exothermic
lower..... exothermic
higher.....endothermic
lower..... endothermic
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do we know that this represents an exothermic reaction?
The products have more energy than the reactants
The products have less energy than the reactants.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is wrongly labelled?
reactants
products
overall energy change
activation energy
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