The importance of good and bad conductors of heat
All metals are good conductors of heat and they are different in conducting the heat, which means that some metals conduct the heat faster than the other, The heat makes us comfortable and helps...
Tagged: The metals
The importance and properties of the bases (alkalis)
The bases (alkalis) The bases are the substances that dissociate in the water producing the negative hydroxide ions (OH–), Examples of some bases such as sodium hydroxide (the caustic soda) NaOH, calcium hydroxide (lime...
The types and properties of the acids
Types of the compounds There are a countless number of existing compounds, they can be classified according to their properties only into the acids, the bases (alkalis), the oxides and the salts.
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...
