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 metals
What are the properties of nitrogen gas?
Nitrogen gas (N2) is mainly found in the atmosphere; it is also found in the Earth’s crust in the form of nitrates, it is found in the organic form in living or dead plants,...
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...
The hardness of materials and life applications on it
Hardness of materials Some solid substances are soft at room temperature such as the rubber, and some solid substances need heat to become soft and easy to be shaped such as the metals, and...