Chemical Change

When baking soda is mixed with lemon juice, a chemical reaction occurs that releases carbon dioxide gas. This type of change is known as a chemical change.

Explanation

A chemical change occurs when a substance is transformed into a new substance with different chemical properties. In the case of baking soda and lemon juice, the reaction produces carbon dioxide gas, which causes the bubbles to form.

The chemical equation for the reaction between baking soda and lemon juice is as follows:

NaHCO3 + H+ → Na+ + CO2 + H2O

In this equation, NaHCO3 (baking soda) reacts with H+ (from the citric acid in lemon juice) to form Na+ (sodium ions), CO2 (carbon dioxide gas), and H2O (water).

The release of carbon dioxide gas is what causes the bubbles to form. This is because the carbon dioxide gas is less dense than the liquid mixture of baking soda and lemon juice, so it rises to the surface and forms bubbles.

Conclusion

In conclusion, the mixture of baking soda and lemon juice is an example of a chemical change. This is because a new substance (carbon dioxide gas) is formed with different chemical properties than the original substances (baking soda and lemon juice).

Tips:

Baking Soda:

• Chemically it is known as

Its molecular mass is and it's density is

It is alkaline in nature with pH 8.

It is bicarbonate salt and is soluble in water.

Chemical Properties:

This involves a chemical reaction

• Properties of the substance change because of the reaction. This involves heat of combustion, malleability, flammability, toxicity, etc.

Answer :-
When baking soda is mixed with lemon juice bubbles are formed with the evolution of Carbon dioxide.

Explanation:

When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a carbon dioxide.

This involves the chemical properties, where the reaction between baking soda and lemon juice results in the release of gases. This shows the property of reactivity of chemical substances.

Baking soda and citric acid react chemically to generate sodium ions, citric acid ions, carbon dioxide (CO2), and water when they come into contact with one another. In our air, carbon dioxide gas is a common element. It is a gas that we naturally exhale and also contributes to the bubbles in carbonated beverages.

Sodium bicarbonate and citric acid in Bath

Fizzies react with water to produce carbon dioxide bubbles. Baking soda, commonly known as sodium bicarbonate, is a weak base in this acid-base reaction, whereas citric acid is just a weak acid.

Therefore the bubbles are formed due to the formation and evolution of carbon dioxide gas.

The reaction involved during this process is given below:
Baking soda + Lemon Juice → Carbon dioxide (CO2) + Other gases

Final Answer -
When baking soda is mixed with lemon juice, bubbles are formed with the evolution of gas and this shows chemical changes.