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What are the laws of chemical combination discussed in Class 9 Science Chapter 3 Notes ?


Safeer PP 15th Mar, 2022
Answer (1)
Shivani Poonia 8th Apr, 2025

This chapter discusses the law of conservation of mass and the law of definite proportions. The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction, while the law of definite proportions indicates that a chemical compound always contains the same proportion of elements by mass.

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