Endothermic and exothermic

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 temperature during an endothermic reaction?

Back

The temperature of the surroundings decreases as heat is absorbed.

Front

What happens to temperature during an exothermic reaction?

Back

The temperature of the surroundings increases as heat is released.

Front

What is the role of surface area in chemical reactions?

Back

A greater surface area increases the rate of reaction by allowing more particles to collide.

Front

What is a catalyst?

Back

A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process.

Front

What is the equation for photosynthesis?

Back

@@6 ext{CO}_2 + 6 ext{H}_2 ext{O} + ext{Energy} ightarrow ext{C}_6 ext{H}_{12} ext{O}_6 + 6 ext{O}_2@@

Front

What is an example of an endothermic process?

Back

Dissolving ammonium chloride in water is an example of an endothermic process.

Front

What is an example of an exothermic process?

Back

Combustion of fuels, such as burning wood or gasoline, is an example of an exothermic process.

Front

How can you identify an endothermic reaction?

Back

An endothermic reaction can be identified by a decrease in temperature or by the absorption of heat.