explain the physical and chemical properties of metal with suitable example
Answers
Answer:
Metals are dense, shiny, good conductors of heat and electricity, and easily lose electrons in chemical reactions. Nonmetals are not dense, dull, do not conduct heat and electricity, and tend to gain electrons. Metalloids are elements that have properties of both metals and nonmetals.
Explanation:
The chemical properties of Metals and Nonmetals are described below. Let us start with the chemical properties of metals.
The density of metals is usually high.
Metals are malleable and ductile.
Metals form an alloy with other metals or non – metals.
Some metals react with air and corrode. For e.g. Iron.
Metals are good conductors of heat and electricity. Lead is an exception.
Generally, metals are in a solid state at room temperature. Except for Mercury. Mercury is in a liquid state.
Many metals produce metal oxide by burning in the oxygen of the air. Highly reactive metals react violently when they’re burnt in oxygen.
Metals like sodium and potassium are stored in oil as they react with air in seconds. They’re highly reactive metals.
Less reactive metals like gold, silver, platinum, etc do not tarnish easily. They stay shiny and lustrous.
Metals produce metal oxide and hydrogen gas while reacting with water.
Soluble metal oxides dissolve in water and create metal hydroxide.
Not all metals react with water. However, highly reactive metals like sodium and potassium react with water violently and an exothermic reaction takes places where the hydrogen immediately catches fire.
Salt and hydrogen are produced when a metal reacts with an acid.
Generally, a metal displaces a less reactive metal in a metal salt solution.
Physical properties can be observed or measured without changing the composition of matter. Physical properties are used to observe and describe matter.
1)color (intensive)
2)density (intensive)
3)volume (extensive)
4)mass (extensive)
5)boiling point (intensive): the temperature at which a substance boils.
6)melting point (intensive): the temperature at which a substance melts.