Welcome to the Quiz!

This quiz contains 12 questions from a mix of 1 subtopics.

True or false? Energy is stored in chemical bonds.

True

False

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True or false? Different chemical bonds hold different amounts of energy.

True

False

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If the reactant molecules in a reaction have more energy in their chemical bonds than the product molecules, will energy be absorbed or released overall? 

Absorbed 

Released 

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What is an exothermic reaction?

A reaction that takes in thermal energy from the surroundings

A reaction that releases thermal energy to the surroundings

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If an exothermic reaction occurs in a closed container, what would happen to the temperature inside the container?

The temperature would decrease

The temperature would increase

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What is an endothermic reaction?

A reaction that releases thermal energy to the surroundings

A reaction that takes in thermal energy from the surroundings

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If an endothermic reaction occurs in a closed container, what would happen to the temperature inside the container?

The temperature would decrease

The temperature would increase

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Graph showing the energy profile of an exothermic reaction with reactants and products.

What type of reaction is shown in the reaction profile above?

An endothermic reaction

An exothermic reaction

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Graph showing the energy profile of an exothermic reaction with reactants having higher energy than products.

What type of reaction is the reaction profile above?

An endothermic reaction

An exothermic reaction

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react / energy / minimum / maximum 


Activation energy is the amount of the reactant particles require in order to collide with each other and .

minimum
energy
react

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Graph showing the progress of a reaction with energy levels of reactants and products, indicating the activation energy.

Which of the above shows the activation energy?

A

B

C

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Diagram showing the energy change of a reaction with arrows indicating different energy levels for reactants and products.

Which of the above arrows indicates the energy change of the reaction?

A

B

C

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