Exothermic and endothermic reactions Flashcards

1
Q

Whats an exothermic reaction?

A

Exothermic reactions transfer energy to the surroundings.

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2
Q

What are some examples of exothermic reactions?

A

Combustion (burning)
Many oxidation reactions, for example rusting
Neutralisation reactions between acids and alkalis

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3
Q

What are endothermic reactions?

A

These are reactions that take in energy from the surroundings.

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4
Q

What happens to the temperature of an endothermic reaction?

A

Heat energy is taken in, causing the reaction mixture and its surroundings to get colder.

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5
Q

Give some examples of endothermic reactions.

A

Electrolysis
The reaction between ethanoic acid and sodium carbonate
The thermal decomposition of calcium carbonate in a blast furnace

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6
Q

What happens to the temperature of an exothermic reaction?

A

Heat energy is transferred to the surroundings, causing the reaction mixture and its surroundings to become hotter.

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