Give chemical properties of metals and non metals?

Question

Answer

Chemical properties of metals and non-metals.

Metals:-

* Electropositive (e+).
* Forms Ionic bond.
* Displaces H2↑ gas with dil acids.
* Shows Basic character.
* Turns Red to blue litmus.

Non-metals:-

* Electronegativity (e–).
* Forms Covalent bond.
* Doesn't displaces H2↑ gas with dil acids.
* Shows acidic character.
* Turns Blue to Red litmus.

Answer

Answer

Answer

CHEMICAL PROPERTIES OF NON-METALS:-

1. Usually have 3-4 electrons on their outer shell

2. Gain or share valence electron

3. Form oxides that are acidic

4. Are good oxidizing agents

5. Higher electronegetivities

CHEMICAL PROPERTIES OF METALS:-

1. Density is usually high

2. Malleable & ductile in nature

3. Form an alloy with other metals or non-metals

4. Some metals react with air and corrode

5. Good conductor of heat & electricity except lead

6. Solid at room temperature except mercury

7. Many metals produce metal oxide by burning with oxygen

8. Less reactive metals don't tarnish easily. They stay lustrous for long time.

9. Soluble metals dissolve with water by creating metal hydroxide

10. Salt & hydrogen are produced when metal reacts with an acid.

Answer

Chemical properties of metals --- 1) metals combines with oxygen and forms basic oxide for example-- 4Na   O2 --- 2Na2O . 2) Basic oxide   water --- bases , so metal oxide are basic in nature , being basic information they turn red litmus to blue . 3) metals react with water to liberate hydrogen gas . 4) metals react with dilute hydrochloric acid and hydrogen sulphide to liberate hydrogen ( except Mg and Mn evolve H2 gas with dil. HNO3 ) Chemical properties of non metals --- 1) non metals combines with oxygen to form acidic or neutral oxide . for example-- C   O2 --- CO2 . 2) acidic oxide  water --- acids so being acidic they turns blue litmus to red . 3) non metals do not react with water . 4) non metals do not displace hydrogen from acids because non metals are electron acceptors , they cannot supply electron to hydrogen .