Exothermic and Endothermic reactions James

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases heat to its surroundings.

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings.

Front

Give an example of an exothermic reaction.

Back

Combustion of fuels, such as burning wood or gasoline.

Front

Give an example of an endothermic reaction.

Back

Photosynthesis in plants, where they absorb sunlight.

Front

What happens to temperature in an exothermic reaction?

Back

The temperature of the surroundings increases.

Front

What happens to temperature in an endothermic reaction?

Back

The temperature of the surroundings decreases.

Front

What is a chemical change?

Back

A chemical change is a process where one or more substances are transformed into new substances with different properties.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is the role of heat in chemical reactions?

Back

Heat can either be absorbed or released during chemical reactions, determining if the reaction is endothermic or exothermic.