Endothermic and Exothermic Reactions

Front

What is an endothermic reaction?

Back

A reaction that absorbs heat from its surroundings, resulting in a decrease in temperature.

Front

What is an exothermic reaction?

Back

A reaction that releases heat to its surroundings, resulting in an increase in temperature.

Front

What instrument is commonly used to measure temperature changes in chemical reactions?

Back

Thermometer.

Front

What happens to the temperature during an endothermic reaction?

Back

The temperature decreases.

Front

What happens to the temperature during an exothermic reaction?

Back

The temperature increases.

Front

Give an example of an endothermic reaction.

Back

Dissolving ammonium nitrate in water.

Front

Give an example of an exothermic reaction.

Back

Combustion of fuels, such as burning wood or gasoline.

Front

What is the role of energy in chemical reactions?

Back

Energy is either absorbed or released during chemical reactions, affecting temperature and reaction rates.

Front

How can you identify an exothermic reaction in a lab?

Back

By feeling an increase in temperature or using a thermometer to measure temperature rise.

Front

How can you identify an endothermic reaction in a lab?

Back

By feeling a decrease in temperature or using a thermometer to measure temperature drop.