The number of well-known elements up till now is 118 elements, These elements can be classified according to their properties and electronic structure into metals, nonmetals and noble (inert) gases, In the 19th century,...
The chemical reaction speed is the change in the concentration and the resultants in a unit time, The chemical reactions differ in the time that they take to occur, At the end of the...
Salts are ionic compounds that result from the neutralization reaction of an acid and a base, they are composed due to the combination of a positive ion (or a positive atomic group) with a negative...
