Question
State the two laws of chemical combination. [2 MARKS]
Answer:
:
Statement : 1 Mark each
The two laws of chemical combination are
1. Law of conservation of mass:
Thelaw of conservation of massstates thatmassin an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to thelaw of conservation of mass, themassof the products in a chemical reaction must equal themassof the reactants.
2. Lawof definiteproportions:
Thelawof definiteproportions, also called Proust'slawor the lawof definite composition, orlaw of constantcomposition states that a given chemical compound always contains its component elements in fixed ratio (by weight) and does not depend on its source and method of preparation.
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:
Statement : 1 Mark each
The two laws of chemical combination are
1. Law of conservation of mass:
Thelaw of conservation of massstates thatmassin an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to thelaw of conservation of mass, themassof the products in a chemical reaction must equal themassof the reactants.
2. Lawof definiteproportions:
Thelawof definiteproportions, also called Proust'slawor the lawof definite composition, orlaw of constantcomposition states that a given chemical compound always contains its component elements in fixed ratio (by weight) and does not depend on its source and method of preparation.
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