Chemical Reactions and Equations

Front

What indicates a balanced chemical equation?

Back

The number of atoms in the reactants is the same as the number of atoms in the products.

Front

What occurs during a chemical reaction?

Back

Bonds between atoms break and/or are formed.

Front

Why must the number of Carbon atoms be the same on both sides of a reaction?

Back

In a chemical reaction, no new atoms can be made or destroyed.

Front

What is a chemical reaction that releases thermal energy called?

Back

Exothermic.

Front

Which type of reaction absorbs thermal energy from the environment?

Back

Endothermic.

Front

What is a reactant?

Back

A substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

A substance that is formed as a result of a chemical reaction.

Front

What does the law of conservation of mass state?

Back

Matter cannot be created or destroyed in a chemical reaction.

Front

What is an example of an exothermic reaction?

Back

Combustion of fuels, such as burning wood.

Front

What is an example of an endothermic reaction?

Back

Photosynthesis in plants.