Published in Chemistry

Chemistry Short Notes and practice questions

This series cover complete chemistry with short notes and practice questions.

The Building block of all matter is called an atom. Atoms are extremely small, smaller than anything that we can imagine or compare with. For exam

Lavoisier and Joseph L. Proust proposed two laws of chemical combination. during a chemical reaction, the sum of masses of the reactant and the pro

Atoms are extremely small, they are smaller than anything that we can imagine or compare with.For example – more than millions of atoms when stacked

The symbolic representation of composition is termed as the chemical formula of a compound. Two things are required to learn and write a chemical f

The summation of the atomic masses of all the atoms in a molecule of the substance is known as the molecular mass of that substance. It is expresse

Although there are so many factors behind the existence of physical composition of matter but here basically we will be dealing with the f

chemical composition of matter is the classification of matter on the basis of it's chemical properties. It is further divided into 3 types

A matter is consists of many atoms and an atom is consists of electrons, protons and neutrons. of these electrons and protons are the equally oppo

Thomson's atomic model proposed that an atom is uniform sphere of positive charges (due to presence of protons ) as well as the negative charges (