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Elements

The substances that cannot be converted into another substance is known as an elements.

  • Each type of atom that makes up an element is unique. The chemical elements are all highly distinct from one another because of this.
  • Atoms from at least one or more elements are present in everything in the universe.
  • The chemistry of elements are organized in order of increasing atomic number, or the quantity of protons in an atom’s nucleus, which typically corresponds with increasing atomic mass, from left to right and top to bottom.
  • All known elements are listed in the periodic table, and those with similar properties are grouped together.
  • The majority of them contain isotopes, which are distinct forms of the same element with differing numbers of neutrons but the same number of protons and electrons.

A material comprised of identical atoms is called an element. For instance, hydrogen is made up of hydrogen atoms, oxygen is made up of oxygen atoms, and carbon is an element made up of carbon atoms. 118 elements have been found so far. Metals and non-metals are the two categories into which elements can be separated.

Metallic Elements

They have the following characteristics :

  • 1. They are good conductors of heat and electricity .
  • 2 . They are shiny
  • 3. They are mostly solids , except mercury
  • 4. They usually have high melting and boiling points .
  • 5. They can be drawn into wires.
  • 6. They can be beaten into foil and plates .

Examples: Aluminium , Silver , Gold , Copper , Tin , and Lead.

Non Metal

Non – metals have the following characteristics :

  1. Non – metals are poor conductors of heat and electricity .
  2. They are dull .
  3. They are found in all the three states of matter : solid , liquid , and gas
  4. They have low melting and boiling points .
  5. They cannot be drawn into wires or beaten into foil and plates .

Examples: Carbon , Oxygen , Iodine , and Sulphur.


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