Chemical Reactions

In a chemical reaction, bonds within reactant molecules are broken and new bonds are established within product molecules to create a new material. Chemical processes take place everywhere around us, from the food our bodies metabolise to how the sunlight we get is produced. It's crucial to understand physical and chemical changes before starting with chemical reactions. The finest illustration of a physical and chemical change is a candle that is burning. Lighting a candle is simple. We can see how the candle turns into wax over time. The candle will go out if you put a jar over it. The burning of the candle is a chemical change in the demonstration, but the conversion of the candle to wax is a physical change. A physical change results in a change in the state of the material, whereas a chemical change results in the formation of a new substance in which energy is either released or absorbed. As a result, we can deduce that some physical changes accompany chemical changes.