Exothermic vs Endothermic Practice

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases energy in the form of heat or light 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

Give an example of an exothermic reaction.

Back

Burning a marshmallow is an example of an exothermic reaction, as it releases heat.

Front

Give an example of an endothermic reaction.

Back

Photosynthesis is an example of an endothermic reaction, as it absorbs sunlight to convert carbon dioxide and water into glucose.

Front

What happens during the condensation of water vapor?

Back

During condensation, water vapor loses energy and releases heat, making it an exothermic process.

Front

What is the process of evaporation?

Back

Evaporation is an endothermic process where liquid water absorbs heat to become water vapor.

Front

How does making ice relate to exothermic reactions?

Back

Making ice is an exothermic process because it releases heat to the surroundings as water freezes.

Front

What is the role of energy in chemical reactions?

Back

Energy changes during chemical reactions determine whether the reaction is exothermic or endothermic.

Front

What is the significance of activation energy in reactions?

Back

Activation energy is the minimum energy required for a chemical reaction to occur, influencing whether a reaction is exothermic or endothermic.

Front

How can you identify an exothermic reaction in a lab?

Back

An exothermic reaction can be identified by a temperature increase in the reaction mixture.