Chemical Reactions and Energy Transfer

Front

What is a chemical reaction?

Back

The process of rearranging atoms on the molecular level.

Front

What does it mean for a chemical equation to be balanced?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation.

Front

What is energy transfer in the context of chemical reactions?

Back

Energy transfer refers to the movement of energy from one system to another during a chemical reaction.

Front

What is the law of conservation of mass?

Back

Matter cannot be created nor destroyed in a chemical reaction.

Front

What is an example of energy transfer in everyday life?

Back

Heating water on a stove, where heat energy is transferred to the water.

Front

What is the difference between exothermic and endothermic reactions?

Back

Exothermic reactions release energy, while endothermic reactions absorb energy.

Front

What is activation energy?

Back

The minimum energy required for a chemical reaction to occur.

Front

What is a reactant in a chemical reaction?

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

How can you tell if a chemical reaction has occurred?

Back

Indicators include color change, temperature change, gas production, or precipitate formation.