“The mass of one atom of an element compared with the mass of one atom of carbon taken as 12 is called relative atomic mass of the element.” Explanation: The mass of one atom of magnesium is two times the mass of one atom of carbon, therefore relative atomic mass of magnesium would be 24….
“A particle carrying either negative or positive charge, is called Ion.” Types of Ions: There are following two types of ions depending upon their nature of charge. Cation Definition: The ion which has positive charge is called Cation. e.g., Na+1, Ba+2, Al+3 etc. A Cation is formed through removal of one or more…
Here in this topic we will discuss definition of molecule in chemistry, molecule examples and properties of molecules. “Smallest particle of elements or compounds which may survive solely is called Molecule.” Composition & Molecule example: It consist of, One atom of the element (monoatomic molecule) E.G., He, Ne, Xe etc. Two atoms of…
The most used definition of atom is as follows, “The smallest particle of an element, which may or may not have an independent existence but can take part in a chemical reaction is called atom.” Explanation of Define Atom: For example, the smallest particle of hydrogen, which does not exist independently is…
According to Greek philosophers, matter is composed of very small particles which cannot be further divided. DEMOCRITUS (460-370BC) named these particles as atoms derived from a Greek word “ATOMOS” which mean indivisible. The ideas of Greek philosophers were not experimental based. In the late 17th century, the quantitative analysis of many substances disclosed that they…
The famous philosopher of the 16th century, Sir Francis Bacon, defined science as a blessing that enriches human health and welfare with new products and methods.This laid foundation for importance of chemistry. The technology of the 20th century and the next century is a product of scientific discoveries. And most of these discoveries have left their mark…