Endothermic and Exothermic Reactions-Levings

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings, resulting in a decrease in temperature.

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases heat to its surroundings, resulting in an increase in temperature.

Front

What happens to energy during an exothermic reaction?

Back

In an exothermic reaction, energy is given out, usually in the form of heat.

Front

What happens to energy during an endothermic reaction?

Back

In an endothermic reaction, energy is absorbed from the surroundings.

Front

What is the role of a thermometer in chemical reactions?

Back

A thermometer is used to measure temperature changes during chemical reactions, helping to identify if a reaction is endothermic or exothermic.

Front

What is combustion?

Back

Combustion is a chemical reaction that occurs when a substance (usually a fuel) reacts with oxygen, producing heat and light.

Front

Give an example of an exothermic reaction.

Back

An example of an exothermic reaction is the combustion of propane in a hot air balloon.

Front

What is the significance of bond breaking in chemical reactions?

Back

Breaking bonds requires energy, which is absorbed during endothermic reactions.

Front

What is the significance of bond formation in chemical reactions?

Back

Forming bonds releases energy, which is given out during exothermic reactions.

Front

How can you tell if a reaction is exothermic or endothermic?

Back

You can tell by measuring the temperature change: an increase indicates an exothermic reaction, while a decrease indicates an endothermic reaction.