PD6 - MRMS MP2: 2025: Exothermic/Endothermic Flashcard

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases energy in the form of heat or light 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

What happens to temperature in an endothermic reaction?

Back

The temperature of the surroundings decreases as the reaction absorbs heat.

Front

What happens to temperature in an exothermic reaction?

Back

The temperature of the surroundings increases as the reaction releases heat.

Front

Give an example of an endothermic reaction.

Back

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

Front

Give an example of an exothermic reaction.

Back

The combustion of gasoline is an example of an exothermic reaction, where energy is released as heat and light.

Front

What is the role of energy in chemical reactions?

Back

Energy is either absorbed or released during chemical reactions, determining whether the reaction is endothermic or exothermic.

Front

How can you identify an endothermic reaction in a lab?

Back

You can identify an endothermic reaction by observing a decrease in temperature of the reaction mixture.

Front

How can you identify an exothermic reaction in a lab?

Back

You can identify an exothermic reaction by observing an increase in temperature of the reaction mixture.

Front

What is the significance of energy changes in chemical reactions?

Back

Energy changes help predict the behavior of reactions and their feasibility in real-world applications.