1-Atom is the smallest particle that takes part in the chemical reaction.
2-Atoms of the same elements are identical in all aspects.
3-Mass is neither created nor destroyed during physical or chemical changes. This statement explains ‘The Law of Conservation of Mass’.
4-Thomson’s model of atom is popularly known as Plum pudding model
5- Thomson’s atom model can be compared to the watermelon
6-In water, hydrogen, and oxygen are in the ratio by mass 1: 8
7-The same proportion of carbon and oxygen in carbon-dioxide obtained from different sources proves the law of definite proportion
8-Anode rays are made up of positively charged particles.
9-The positively charged particles obtained from Hydrogen gas are called protons
10-The relative charge of an electron is -1
11-The relative charge of the proton is +1
12-Proton can be defined as Hydrogen ion
13-Protons are discovered by Goldstein
14-The another name of anode rays is canal rays
15-The fluorescent material used in the cathode ray tube is Zinc sulfide
16-The negatively charged particles are electrons
17-John Dalton proposed atomic theory in 1803
18-Air is a poor Conductor of electricity
19- Dalton is known as a ‘Meticulous Meteorologist’.
20-The discharge tube experiment was first done by William Crooke.
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