Endothermic vs 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

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

Combustion of gasoline is an example of an exothermic reaction, where heat and light are released.

Front

What is the main difference between endothermic and exothermic reactions?

Back

The main difference is that endothermic reactions absorb heat, while exothermic reactions release heat.

Front

What is nuclear fission?

Back

Nuclear fission is a process where a large nucleus splits into smaller nuclei, releasing a significant amount of energy.

Front

What is nuclear fusion?

Back

Nuclear fusion is a process where small nuclei combine to form a larger nucleus, also releasing a large amount of energy.

Front

What is a sign that a chemical reaction has occurred?

Back

Bubbles of gas appearing is a sign that a chemical reaction has occurred.

Front

What type of reaction occurs in a hand warmer?

Back

A hand warmer typically involves an exothermic reaction.

Front

What is the role of nuclear energy in the sun?

Back

Nuclear energy is responsible for producing heat and light from the sun through the process of nuclear fusion.