Postulates of Dalton Atomic Theory
Postulates of Dalton Atomic Theory
Explanation of Laws of Chemical Combination: Dalton’s Atomic Theory:
Dalton’s atomic theory provided an explanation for the law of conservation of mass and the law of definite proportions. According to Dalton’s atomic theory, all matter (whether an element, a compound a mixture), is composed of small particles, called atoms.
The Main Postulates of Dalton’s Atomic Theory
1. Every matter is made up of very small particles, called the atoms.
2. Atoms are indivisible particles which can neither be created nor be destroyed in a chemical reaction.
3. Atoms of a given element are identical in mass as well as in chemical properties.
4. Atoms of different elements have different masses and chemical properties.
5. Atoms combine in the ratio of small whole numbers to form compounds.
6. The relative numbers and kinds of atoms are constant in a given compound.
Merits of Dalton’s Atomic Theory:
Demerits of Dalton’s Atomic Theory
Identify the Main Postulates of Dalton’s Atomic Theory (a) Every matter is made up of very small particles, called the molecules. (b) Atoms are indivisible particles which can be created and destroyed in a chemical reaction. (c) Atoms of a given element are identical in mass as well as in chemical properties. (d) Atoms of different elements have different masses and chemical properties. (e) Atoms combine in the ratio of small whole numbers to form compounds. | |||
| Right Option : B | |||
| View Explanation | |||
According to Dalton's atomic theory, atoms ________________________. | |||
| Right Option : D | |||
| View Explanation | |||
Which of the following statements contradicts Dalton's atomic theory ? | |||
| Right Option : B | |||
| View Explanation | |||
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