Flashcards on Exothermic and Endothermic Reactions

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Define exothermic reaction.

A reaction that releases heat to its surroundings.

Define endothermic reaction.

A reaction that absorbs heat from its surroundings.

Give an example of an exothermic reaction.

Burning of wood.

Give an example of an endothermic reaction.

Photosynthesis in plants.

What is the energy change in an exothermic reaction?

Negative.

What is the energy change in an endothermic reaction?

Positive.

In which type of reaction does the temperature of the surroundings increase?

Exothermic reaction.

In which type of reaction does the temperature of the surroundings decrease?

Endothermic reaction.

What happens to the enthalpy in an exothermic reaction?

Enthalpy decreases.

What happens to the enthalpy in an endothermic reaction?

Enthalpy increases.

Exothermic reactions are used in which type of devices to generate heat?

Combustion engines.

Endothermic reactions are used in which type of devices to provide cooling?

Refrigerators.

Which type of reaction is the process of respiration?

Exothermic reaction.

Which type of reaction is the process of photosynthesis?

Endothermic reaction.

What is the symbol commonly used to represent heat in chemical equations?

ΔH

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Test Your Knowledge


Which type of reaction releases heat to its surroundings?



What is the energy change in an exothermic reaction?



In which type of reaction does the temperature of the surroundings increase?



What happens to the enthalpy in an endothermic reaction?



Which type of reaction is used in combustion engines to generate heat?



Which type of reaction is used in refrigerators to provide cooling?



What is the symbol commonly used to represent heat in chemical equations?



Which type of reaction is the process of respiration?



Which type of reaction is the process of photosynthesis?



In which type of reaction does the temperature of the surroundings decrease?




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