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प्रश्न
Name the scientist who gave atomic theory of matter.
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उत्तर
John Dalton proposed the atomic theory of matter.
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संबंधित प्रश्न
Which postulate of Dalton’s atomic theory can explain the law of definite proportions?
Which postulate of Dalton's atomic theory is the result of law of conservation of mass given by Lavoisier ?
Which part of the Dalton's atomic theory came from the law of constant proportions given by Proust ?
Which postulate of Dalton’s atomic theory can explain the law of constant proportions ?
In water, the proportion of oxygen and hydrogen by mass is :
What do we call those particles which have less electrons than the normal atoms ?
What do we call those particles which are formed by the loss of electrons by atoms ?
Work out the formulae for the following compounds :
Sodium oxide
Two samples ‘m’ and ‘n’ of slaked lime were obtained from two different reactions. The details about their composition are as follows:
- ‘sample m’ mass: 7g
- Mass of constituent oxygen: 2g
- Mass of constituent calcium: 5g
- ‘sample n’ mass: 1.4g
- Mass of constituent oxygen: 0.4g
- Mass of constituent calcium: 1.0g
Which law of chemical combination does this prove? Explain.
Ruthresh, Hari, Kanishka, and Thahera collected different samples of water from a well, a pond, a river, and underground water. All these samples were sent to a testing laboratory. The test result showed the ratio of hydrogen to oxygen as 1:8.
- What conclusion would you draw from the above experiment?
- Which law of chemical combination does it obey?
