What is a chemical reaction? List some examples

Solution 3Q

Here, we are going to discuss about chemical reactions and also list some examples.

Step 1:

Let us consider some situations of daily life and think what happens when-

• Milk is left at room temperature
• Food gets digested in our body
• We respire
• Grapes get fermented

In all the above situations, the nature and identity of the initial substance have somewhat changed. This refers to a chemical change and whenever a chemical change occurs, we can say that a chemical reaction has taken place.