Chemical Reactions and Energy Transfer Flashcard

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs energy from its surroundings, resulting in a decrease in temperature. Example: Dissolving ammonium nitrate in water.

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases energy to its surroundings, resulting in an increase in temperature. Example: Combustion of fuels.

Front

What happens to particles during an exothermic reaction?

Back

During an exothermic reaction, particles release energy, causing the temperature of the surroundings to increase.

Front

What happens to particles during an endothermic reaction?

Back

During an endothermic reaction, particles absorb energy, causing the temperature of the surroundings to decrease.

Front

How does temperature affect particle movement?

Back

As temperature increases, particles move faster due to increased energy.

Front

What is the role of energy transfer in chemical reactions?

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Energy transfer is crucial in chemical reactions as it determines whether the reaction is endothermic or exothermic.

Front

What is an example of an endothermic process?

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An example of an endothermic process is the melting of ice, where heat is absorbed from the surroundings.

Front

What is an example of an exothermic process?

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An example of an exothermic process is the burning of wood, which releases heat and light.

Front

What is the effect of an exothermic reaction on the temperature of food?

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An exothermic reaction increases the temperature of food by transferring energy to it.

Front

What is the definition of energy in the context of chemical reactions?

Back

Energy in chemical reactions refers to the capacity to do work or produce heat, which is involved in breaking and forming bonds.