Classification of elements
Classification of Elements: Based on distinct physical properties like hardness, malleability & lustre a.Non-Metals b.Metals : Based on Chemical Properties: Alkali Metals: Metals which […]
Chemistry
Valency, Radicals, Ions and Bonds
Valency: Combining capacity of an element or a radical with another element or radical to form a compound or molecule Total number of electrons lost, […]
Language of Chemistry
Chemistry: Branch of Science which deals with the study of matter, its composition and properties Matter: anything that occupies space and has mass e.g. stone, […]
Differences between Metals and Non-metals
S.N. Metals Non-metals 1. Metals are usually solids at room temperature. {Exception: Mercury (Hg) and Gallium (Ga) are liquid metals}. Non-metals usually are solids or […]
Types of chemical reactions
Chemical reactions Chemical reactions are the processes in which new substances with new properties are formed. During a chemical reaction, atoms of one element do […]
Silver and gold (coinage metals)
Silver: Symbol :- Ag Atomic number :- 47 Atomic weight :- 107.88 amu Valency :- 1 Position in the periodic table :- group IA (d-block […]
Metals (occurence, properties and uses)
Metals form an important class of elements. They are widely used in our daily life for a large number of purposes. They are the elements […]
Acids,Bases and Salts (Types and properties)
One hundred and fifteen different elements have been discovered so far, which combine to form a huge number of compounds. On the basis of their […]
Classification of elements (Modern periodic table)
Modern periodic table was proposed by Henry Moseley in 1963. He found that the atomic number is the more fundamental property which led to the […]