Question

discuss about the law of conservation of mass,law of definite proportions and dalton's atomic theory with the help of examples​

Answer 1

Answer:

Law of Conservation of Mass:

The law of conservation of mass states that

“The mass in an isolated system can neither be created nor be destroyed but can be transformed from one form to another”. Here according to the law of conservation of mass, the mass of the reactants must be equal to the mass of the products.

Mass of reactants = Mass of products

Law of Definite Proportion:

The law of definite proportions, also known as the law of constant proportions, states that the individual elements that constitute a chemical compound are always present in a fixed ratio (in terms of their mass). This ratio does not depend on the source of the chemical compound or the method through which it was prepared.

Eg. Pure water will always contain hydrogen and oxygen in a fixed mass ratio (a gram of water consists of approximately 0.11 grams of hydrogen and 0.88 grams of oxygen, the ratio is 1:8).

Dalton's Atomic Theory:

Dalton’s atomic theory states that all matter was made up of small, indivisible particles known as ‘atoms’.

Postulates of Dalton’s Atomic Theory

• All matter is made up of tiny, indivisible particles called atoms.
• All atoms of a specific element are identical in mass, size, and other properties. However, atoms of different element exhibit different properties and vary in mass and size.
• Atoms can neither be created nor destroyed. Furthermore, atoms cannot be divided into smaller particles.
• Atoms of different elements can combine with each other in fixed whole-number ratios in order to form compounds.
• Atoms can be rearranged, combined, or separated in chemical reactions.