Endothermic and Exothermic Reactions

Front

What type of reaction is photosynthesis?

Back

Endothermic

Front

How is energy transferred in a chemical reaction?

Back

Through breaking and forming bonds

Front

What happens to the atoms of reactants in a chemical reaction?

Back

The atoms of the reactants unbond, rearrange, and then rebond to form the products.

Front

In an exothermic reaction, what happens to heat?

Back

Heat is given out.

Front

If the initial temperature is 20°C and the final temperature is 10°C, what type of reaction occurred?

Back

Endothermic

Front

Define an endothermic reaction.

Back

A reaction that absorbs heat from its surroundings.

Front

Define an exothermic reaction.

Back

A reaction that releases heat to its surroundings.

Front

What is the role of energy in chemical reactions?

Back

Energy is involved in breaking and forming chemical bonds.

Front

Give an example of an exothermic reaction.

Back

Combustion of fuels.

Front

Give an example of an endothermic reaction.

Back

Photosynthesis.