NCERT Solutions for Class 7 Science Chapter 6
Important NCERT Questions
7th Chapter 6 Physical and Chemical Changes
NCERT Books for Session 2022-2023
CBSE Board and State Board
Questions No: 4
When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. What type of change is it? Explain.
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This a chemical change as new products are formed.
Baking soda + Lemon juice ————> Salt + Carbon dioxide + Water
When acid react with carbonates, salt is formed releasing carbon dioxide and water.
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