1- The modern rule of chemical classification of elements is based on the atomic number of elements.
2- Water is a compound because it holds two different elements associated with chemical bonding. There is no water element (aliment).
3- Those who reduce the velocity of the catalyst reaction are called negative catalysts.
4- The calcopyrite is the ore of copper.
5- Electrons, protons and neutrons in the tritium (tritium) are in the ratio of 1: 1: 2.
6- Tanu gives starch blue color with a drop of iodine solution.
7- Acid tends to provide protons.
8- Marble is an example of a compound.
9- Max Planck was from Germany who won the Nobel Prize for the discovery of Quantum Siddhant.
10- Neutron is free of charge.
11- A mixture of alcohol, benzene and petrol is called power alcohol.
12- The chemical name of the picric acid is 2, 3, 6 trinitophinol.
13- The first rule of thermodynamics, also called 'the rule of energy conservation'.
14- The reactions that occur in only one direction are called irreversible reactions.
15- Aloe is the process of processing monozite.
16- Bones and teeth have calcium phosphate.
Water contains 10 to 10 gms of water in 17-180 g.
18- Electrons do not get coupled until they get blank for the empty chambers - this principle is called the rule of the Hund.
19- The most light metal is lithium.
20- Arsenic is a metallic instrument.