Matter is anything that has a mass & occupies a space, Mass is the amount of matter that the body contains, The measuring unit of mass is gm or kg, Volume is the space...
The substitution reactions are the reactions that depend on the activity of metals, where the element which is more active substitutes (replaces) the less active one in another compound, The activity of metals can...
Classification of metals according to their chemical activity helps us understand why some metals react rapidly with water, oxygen, and acids, while others remain almost unchanged for years. The chemical activity of metals plays...
