Uses

Question 1

Al

Answer 1

Construction, aerospace industry, overhead power lines, fuel cells,

Question 2

Boric acid

Answer 2

Mild antiseptic and pesticide, as the starting material for its anhydride- boron oxide,

Question 3

Boron oxide

Answer 3

Desolves many metal oxides, used as a flux- cleanser metals, make finerglass, borosilicate glass- very low thermal expansion

Question 4

Alumina(Al2O3)

Answer 4

Stationary phase in chromatography

Question 5

BF3

Answer 5

Industrial catalyst

Question 6

KO2, potassium super oxide

Answer 6

Submarines, space stations to regenerate air

Question 7

Li

Answer 7

Thermonuclear weapons, treat bipolar disorder, lubrication, batteries

Question 8

K

Answer 8

KCl- fertilizer.KNO3- faciliate the ignition of matches

Question 9

Be

Answer 9

Construction of missles and satellites, as windows for x-ray tubes, added tu Cu, electronics industry

Question 10

Mg

Answer 10

Lightness and toughness- airplanes, cars

Question 11

Ca

Answer 11

As structual materials in organisms, buildings, civil engineering, cement

Question 12

C

Answer 12

Graphite, dimond, electrodes, batteries, lubricant

Question 13

Si

Answer 13

Semiconductors,

Question 14

Ge

Answer 14

Semiconductors

Question 15

Sn

Answer 15

Tinplating, bronze

Question 16

Pb

Answer 16

Construction industry, radiation shields, electrodes of batteries l, transportation of acids

Question 17

O2

Answer 17

Steel industry, medicine

Question 18

Selenium

Answer 18

Solar cells, photoelectric devices, photocopying

Question 19

H2O2

Answer 19

Hair bleach, antiseptic, rocket fuel, environment-friendly oxidizing agent

Question 20

SO2

Answer 20

Refrigerant, bleach for textiles and flour, production of sulfuric acid

Question 21

Sulfuric acid (H2SO4)

Answer 21

Fertilazers, petrochemicals, dyestuffs, detergents

Question 22

Cl2

Answer 22

Plastics, solvents, pesticides, bleaching agent in paper and textile industry, disinfecting water, weapon?

Question 23

Bromine

Answer 23

Organic synthesis, as fire retardants and pesticides, AgBr- photography

Question 24

I2

Answer 24

Antiseptic, esencial trace element

Question 25

KClO3

Answer 25

Fireworks, matchrs

Question 26

He

Answer 26

Airships, medicine and diving to dilute O2

Question 27

Noble gases

Answer 27

Gas-discharge tubes- neon lights.

Question 28

Xenon

Answer 28

Halogen lamps, high speed photographic flash tubes, investigates as an anesthetic

Question 29

Ti

Answer 29

Prosthetics,

Question 30

TiO2

Answer 30

Pigment in paints, paper production, food, solar cells

Question 31

V

Answer 31

Specific alloys of steel(springs), as pigments in ceremic and glass ind

Question 32

Cr

Answer 32

Stainless steel, chrome plating

Question 33

MnO2

Answer 33

Dry cell batteries, glass,

Question 34

Co

Answer 34

Alloys(surgical steel, drill bits, lathe tools), oxide- blue coloring

Question 35

Ni

Answer 35

Stainless steel, copper alloys, batteries, catalysts

Question 36

Cu

Answer 36

Alloys- brass, bronze