Dalton used evidence from the work of other scientists to help him
develop his theory read through each statement and identify the
scientist and the idea that he has combined?

Dear student

 

According to Dalton’s atomic theory, all matter, whether an element, a compound or a mixture is composed of small particles called atoms. The postulates of this theory may be stated as follows:

  1. All matter is made up of very tiny particles. These particles are called atoms.

  2. An atom cannot be divided further i.e., atoms are indivisible.

  3. Atoms can neither be created nor destroyed in a chemical reaction.

  4. All atoms of an element are identical in all respects, including the mass, chemical properties, etc.

  5. Atoms of different elements have different masses and chemical properties.

  6. Atoms of different elements combine in small whole number ratios to form compounds.

  7. In a given compound, the relative number and types of atoms are constant.

 
The law of constant proportion: This law follows directly from the 6   th  and 7   th  postulates of Dalton’s atomic theory, which state that atoms of different elements combine in small whole number ratios to form a compound; and in a given compound, the relative number and types of atoms are constant.



Lavoisier developed the theory of conservation of mass
Law of definite proportion was given by Proust.



Regards

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