What are the types and properties of salts?
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...
Tagged: The nonmetals
The electric conductivity of substances and life application on it
The electric conductivity The substances can be classified according to the electric conductivity into good conductors of electricity and bad conductors of electricity, The electrical conductivity is the ability of a material to carry...
How can you calculate the valency of each element?
The valency The valency is the number of electrons that an atom gains, loses or even shares during a chemical reaction, The valency is the number of electrons that an atom needs to gain or...
What are the types of covalent bonds?
The covalent bond The covalent bond is a bond occurred among the atoms of nonmetals through the participation of each atom with the same number of electrons to complete the outer electron shell.
What is the ionic bond? & the characteristics of the ionic compounds
The element is composed of the molecules, Each molecule consists of the atoms, the atom is electrically neutral in its ordinary state (In the atom, the number of the electrons equals the number of...
Attempts of elements classification, Mendeleev, Moseley & Modern periodic table
The elements The scientists classified the elements according to their properties to facilitate their study and to find a relationship between the elements, and their chemical and physical properties.
