Endothermic and Exothermic reactions

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

Give an example of an endothermic reaction.

Back

Dissolving Alka-Seltzer in water is an example of an endothermic reaction.

Front

Give an example of an exothermic reaction.

Back

A hand warmer is an example of an exothermic reaction.

Front

What happens to temperature during an endothermic reaction?

Back

The temperature of the surroundings decreases during an endothermic reaction.

Front

What happens to temperature during an exothermic reaction?

Back

The temperature of the surroundings increases during an exothermic reaction.

Front

True or False: Exothermic reactions absorb energy.

Back

False. Exothermic reactions release energy.

Front

What is a common characteristic of endothermic reactions?

Back

Endothermic reactions often feel cold to the touch because they absorb heat.

Front

What is a common characteristic of exothermic reactions?

Back

Exothermic reactions often feel warm or hot to the touch because they release heat.

Front

How does cooking bacon relate to endothermic reactions?

Back

Cooking bacon is an endothermic reaction as it absorbs heat and undergoes a chemical change.