Give a 5 min speech on periodic table of chemical elements: Impact on human welfare
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Answer:
About periodic table of chemical elements:
1) Nonmetal or non-metal could be a matter that doesn't have the properties of a metal.
2) Some are gases including: atomic number 1, helium, oxygen, nitrogen, fluorine, neon, or radon and plenty of others.
3) AN example of a solid that's a nonmetal is sulfur. it's yellow and not shiny in the slightest degree.
4) AN example of a liquid that's a nonmetal is Br. It is red. A non metal is additionally a decent dielectric for warmth and cold.
5) Usually, gases or brittle solids are non-metals. components on the table is classified as metal, semi metal, or non-metal.
6) Five times a lot of components are metals than nonmetals. However, nonmetals are plethoric and vital.
7) 2 of the nonmetals hydrogen and helium make up over ninety nine per cent of the noticeable Universe, and one oxygen makes up on the point of half the Earth's crust, oceans and atmosphere.
8) Living organisms also are composed virtually entirely of nonmetals, and nonmetals type more compounds than metals.