4041019
Descrição
Quiz por Sarah Arnold, atualizado more than 1 year ago
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Criado por Sarah Arnold
aproximadamente 9 anos atrás
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Questão 1
Questão
Tick all examples of Exothermic Reactions!
Responda
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Reactions between acids and alkalis
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Reaction of water and calcium oxide
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Photosynthesis
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Burning petrol
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Electrolysis
Questão 2
Questão
An [blank_start]exothermic[blank_end] reaction is a chemical reaction that [blank_start]releases[blank_end] energy by light or heat. It is the opposite of an [blank_start]endothermic[blank_end] reaction.. Expressed in a chemical equation: reactants → products + energy!
Responda
-
Endothermic
-
Exothermic
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releases
-
takes in
-
endothermic
-
exothermic
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Light
-
Heat
-
Reversible
Questão 3
Questão
Because exothermic reactions give out heat, it may result in a change of amount of energy in the surrounding areas.
Responda
- True
- False
Questão 4
Questão
Combustion is an example of an exothermic reaction!
Responda
- True
- False
Questão 5
Questão
What makes this image an exothermic reaction?
Responda
-
It gives out heat
-
It gives out light
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It gives out energy
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It gives out sound
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It gives out free sweets
Questão 6
Questão
As exothermic reactions release [blank_start]heat[blank_end] energy, the product of the [blank_start]reaction[blank_end] is the heat, with whatever the heat is caused by being the reactant.
Responda
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Chemical
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Heat
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Electrical
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Nuclear
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Gravitational Potential
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Equation
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Sum
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Reaction
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Experiment
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Recipe
Questão 7
Questão
Exothermic reactions are the main type of reactions that happen.
Responda
- True
- False
Questão 8
Questão
In [blank_start]reversible[blank_end] reactions, the reaction in one direction will be exothermic and the reaction in the other direction will be endothermic.
Responda
-
Irreversible
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Reversible
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Exothermic
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Endothermic
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Chemical
Questão 9
Questão
Exothermic reactions transfer energy to the surroundings.
Responda
- True
- False
Questão 10
Questão
[blank_start]Explosions[blank_end] are the most powerful examples of exothermic reactions.
Responda
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Hot Water Bottles
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Explosions
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Neutralisation
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Combustion
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Oxidation
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