Group 4

Question 1

Carbon in nature

Answer 1

On Earth, most carbon is stored in rocks and sediments, while the rest is located in the ocean, atmosphere, and in living organisms

Question 2

Carbon allotropic forms

Answer 2

Graphite, diamond

Question 3

Graphite Properties

Answer 3

Good conductivity, very weak, iron black

Question 4

Graphite structure

Answer 4

rings of six carbon atoms arranged in widely spaced horizontal sheets.

Question 5

Graphite uses

Answer 5

Pencils, polishes, brushes for electric motors, and cores of nuclear reactors

Question 6

Diamond Properties

Answer 6

Bad conductivity, very hard, colorless

Question 7

Diamond structure

Answer 7

In a giant covalent structure, each atom is joined to 4 other atoms by covalent bonds

Question 8

Diamond uses

Answer 8

Jewelry, drills, vehicles

Question 9

Carbon monoxide

Answer 9

CO

Question 10

Carbon monoxide properties

Answer 10

colorless, odorless, tasteless, highly poisonous, flammable, insoluble

Question 11

Carbon monoxide uses

Answer 11

It is used as a reagent, in the manufacturing of detergents, and purification of nickel.

Question 12

Carbon dioxide

Answer 12

CO2

Question 13

Carbon dioxide properties

Answer 13

Colorless, odorless, non-flammable, slightly toxic, soluble

Question 14

Carbon dioxide uses

Answer 14

Carbon dioxide is used in fire extinguishers, for inflating life rafts and jackets, promoting the growth of plants in greenhouses, and in carbonated beverages

Question 15

Baking soda

Answer 15

NaHCO3

Question 16

Baking soda uses

Answer 16

Fire extinguishers, medicine, baking

Question 17

Washing soda

Answer 17

Na2CO3

Question 18

Washing soda uses

Answer 18

Soap, glass making, textile, oil

Question 19

Chalk, limestone, marble

Answer 19

CaCO3

Question 20

Chalk, limestone, marble uses

Answer 20

production of cement, plastering, painting materials, to acidify the soil, marble, medicine, synthetic flooring

Question 21

Silicon in nature

Answer 21

Sand, clay, rock, building material, glass

Question 22

Uses of silicon

Answer 22

aluminum, water repellants, heat-resistant seals, caulks, and flexible molds.

Question 23

Silicate industry

Answer 23

Glass, clay, building material

Question 24

Production of glass

Answer 24

Na2OCaO6SiO2
kalcinuotosios sodos misinysatausintos kalkeskvarcinis smelis

Question 25

Silicon in eletronics

Answer 25

Silicon is well-suited for electronics because it's a semiconductor, meaning it conducts electricity better than an insulator like glass but not as well as a pure conductor like copper or gold.