Endothermic and Exothermic Reactions-Levings

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases energy, usually 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

True or false: Exothermic reactions absorb energy.

Back

False

Front

What is the process of photosynthesis?

Back

Photosynthesis is an endothermic reaction where plants absorb sunlight to convert carbon dioxide and water into glucose and oxygen.

Front

What type of reaction occurs in hot air balloons?

Back

Exothermic reaction occurs in hot air balloons when combustion of propane and oxygen releases heat.

Front

What happens to chemical bonds during an exothermic reaction?

Back

In an exothermic reaction, chemical bonds are formed, releasing energy.

Front

What happens to chemical bonds during an endothermic reaction?

Back

In an endothermic reaction, chemical bonds are broken, requiring energy input.

Front

Give an example of an exothermic reaction.

Back

Combustion of fuels, such as burning wood or propane.

Front

Give an example of an endothermic reaction.

Back

Photosynthesis in plants.

Front

What is the role of energy in chemical reactions?

Back

Energy is required to break bonds in reactants and is released when new bonds are formed in products.