Understanding Metals And Non Metals

Front 1

Metals are classified into

Back 1

1.Metals

2.Non Metals

3.Metalloids

Front 2

Metalloids Definition

Back 2

Metalloids are the elements which possess both the properties

of metals as well as non metals.

Hint 2

Possess both properies

Eg.

1 Silicon

2. Germanium

3. Antimony

Sili german ant

Front 3

Physical properties of metals

1.Physical State

Back 3

1.They are solid at room temperature

Exception: Mercury

Gal lium

Hint 3

Solid at?

Except merc gall

Front 4

Physical properties of metals

2. Lusture

Back 4

Metals in their pure state have a Shine and can be polished to give a highly reflective surface.

Hint 4

Have a ? Can be ? To give?

Front 5

Malleability

Back 5

Metals have the ability to withstand hammering and can be made into thin sheets.

Hint 5

WITHSTAND Hammering

Front 6

DUCTILITY

Back 6

The ability of the metals to be drawn into thin wires is called ductility.

Gold and silver are the most ductile metals.

Fact: 1 gram of gold 2 km length.

Hint 6

Drawn thin wires.

Front 7

Conduction of Heat

Back 7

Metals have high melting point

Silver and Copper best

Lead and mercury poor conductor

Front 8

Conduction of electricity

Electric wires made of copper. Why

Back 8

Electric wires are made of copper having a outer coating of PVC since pvc is bad conductor of electricity.

POLY VIN YL chloride

Front 9

Hardness

Back 9

Alkali metals like Sodium and Potassium are soft metals and can be with 🔪

Front 10

Which element Highest melting point

Back 10

Tungsten

Front 11

Low melting points

Back 11

Sodium and Potassium

Front 12

Sonorous

Back 12

The metals that produce a sound 🔔🔔🔔on striking a hard substance.

Front 13

Physical properties non metals State

Back 13

1. Are either in solid or gaseous state

Exception Bromine liquid

Front 14

Physical properties non metals lusture

Back 14

2. Do not have lusture

Except Iodine

Front 15

3.Physical properties non metals hardness

Back 15

3 Do not possess the property of hardness except Carbon in the form diamond

Carbon highest substance known high melting and boiling point.

Front 16

3.Physical properties non metals hardness

Back 16

3 Do not possess the property of hardness except Carbon in the form diamond

Carbon highest substance known high melting and boiling point.

Front 17

Physical properties non metals electricity

Back 17

4. Do not conduct electricity except graphite allotrope of carbon

Front 18

most reactive metals.

Back 18

Sodium Potassium

Front 19

Sodium GR kept in kerosene

Back 19

Sodium is the most reactive metal. S reacts with oxygen in air at room temperature to form sodium oxide. Hence kept under kerosene oil to prevent its reaction with oxygen, moisture and carbon dioxide.

4Na+O2 🔜 2Na2O

Front 20

Sodium oxide potassiun oxide

Back 20

Na 2 O +H2O ---2NaOH

K2O +H20===2KOH

Front 21

SODIUM OXIDE AND POTASSIUM OXIDE DISSOLVES IN WATER TO FORM ALKALIS.

SODIUM OXIDE AND POTASSIUM OXIDE DISSOLVES IN WATER TO FORM ALKALIS.

SODIUM OXIDE AND POTASSIUM OXIDE DISSOLVES IN WATER TO FORM ALKALIS.

Back 21

Na2O+H2O_____2NaOHK2O+ H2O_____2KOHSODIUM OXIDE AND POTASSIUM OXIDE DISSOLVES IN WATER TO FORM ALKALIS.

Front 22

ZINC BURNS IN AIR ONLY ON STRONG BEATING TO FORM ZINC OXIDE

Back 22

Zn+O2____2ZnO

Front 23

Iron filing burn vigorously when sprinkled in the flame of burner.

Back 23

3Fe+2O2------Fe3O4

Front 24

Copper

Back 24

Copper is least reactive. Does not burn on heating but hot metal is coated with black colour layer of copper OXIDE.

Front 25

Aluminium develops a thin layer when exposed to air.

Back 25

4Al+ 3O 2 ------2Al2O3

Front 26

Anodised panals

Back 26

Anodising a process of forming a thick OXIDE LAYER of ALUMINIUM.

ALUMINIUM DEVELOPS A Thin OXIDE layer when exposed to air.

Front 27

Amphoteric Oxides

Back 27

Metal OXIDE are usually basic in nature. Some metal OXIDE such as aluminium oxide

ZINC . Oxide

React both with acid as well as base to produce salt and water.