Advertisements
Advertisements
प्रश्न
Give one major drawback of Dalton's atomic theory of matter.
Advertisements
उत्तर
Dalton's atomic theory states that atoms are indivisible; however, under special circumstances, atoms can be further divided into smaller particles called electrons, protons and neutrons. So, atoms are made of subatomic particles into which they can be broken or divided.
APPEARS IN
संबंधित प्रश्न
Which part of the Dalton's atomic theory came from the law of constant proportions given by Proust ?
State the law of constant proportions. Give one example to illustrate this law.
The atomic theory of matter was proposed by :
In water, the proportion of oxygen and hydrogen by mass is :
In an experiment, 4.90 g of copper oxide was obtained from 3.92 g of copper. In another experiment, 4.55 g of copper oxide gave, on reduction, 3.64 g of copper. Show with the help of calculations that these figures verify the law of constant proportions.
When 5 g of calcium is burnt in 2 g of oxygen, then 7 g of calcium oxide is produced. What mass of calcium oxide will be produced when 5 g of calcium is burnt in 20 g of oxygen ? Which law of chemical combination will govern your answer ?
What do we call those particles which are formed by the gain of electrons by atoms ?
Work out the formulae for the following compounds :
Sodium oxide
State the law of constant proportions.
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?
