Chemical Change

When baking soda is mixed with lemon juice, a chemical reaction takes place resulting in the evolution of gas. This is a chemical change because the substances involved in the reaction undergo a chemical transformation resulting in the formation of new substances with different properties.

The Chemical Reaction

The chemical reaction taking place between baking soda and lemon juice can be represented as follows:

NaHCO3 + H+ --> Na+ + CO2 + H2O

In this reaction, baking soda (sodium bicarbonate) reacts with the acidic lemon juice (which contains hydrogen ions) to form sodium ions, carbon dioxide gas, and water.

Bubbles Formation

The evolution of gas during the reaction is what causes the bubbles to form. The carbon dioxide gas that is formed is not soluble in water and therefore bubbles up and escapes from the mixture.

Explanation

When baking soda and lemon juice are mixed, the acidic lemon juice reacts with the baking soda to produce carbon dioxide gas. This gas is what causes the bubbles to form. This reaction is a chemical change because the baking soda and lemon juice undergo a chemical transformation resulting in the formation of new substances with different properties. The properties of the carbon dioxide gas are different from the baking soda and lemon juice that reacted to form it. This reaction is an example of an acid-base reaction, with the lemon juice acting as the acid and the baking soda acting as the base.

Ans-it a chemaical change.Here,a new substances,carbon dioxide gas is formed