Endothermic and Exothermic Reactions

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases energy in the form of heat to its surroundings.

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs energy from its surroundings, usually in the form of heat.

Front

What happens to temperature during an exothermic reaction?

Back

The temperature increases as heat is released into the surroundings.

Front

What happens to temperature during an endothermic reaction?

Back

The temperature decreases as heat is absorbed from the surroundings.

Front

What is a chemical change?

Back

A chemical change is a process where one or more substances are transformed into new substances with different properties.

Front

What is a physical change?

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A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is activation energy?

Back

Activation energy is the minimum amount of energy required to initiate a chemical reaction.

Front

What is the role of energy profile diagrams?

Back

Energy profile diagrams illustrate the energy changes during a chemical reaction, showing the energy of reactants, products, and activation energy.

Front

What is rusting?

Back

Rusting is an example of an exothermic reaction where iron reacts with oxygen and moisture to form iron oxide, releasing heat.

Front

What is the difference between reactants and products?

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Reactants are the starting substances in a chemical reaction, while products are the substances formed as a result of the reaction.