Oxygen

Август 12, 2022

Содержание

2. Formula O2
3. Transcription ['ɔksiʤ(ə)n]
4. Etymology It is derived from Greek and it means «acid former».
5. Position in the periodic table Oxygen is in group 16 and period 2 of the Periodic
6. Нistory of discovery Oxygen was obtained by C. W. Scheele and J. Priestley independently.
7. Structure The oxygen molecule consists of two atoms. The mechanism of its formation is non-polar covalent.
8. Electronic configuration 1s22s22p4
9. Atomic mass 16 grams per mole
10. Radius of the oxygen atom 60
11. Valence –2, −1, –½, –⅓, 0, +½, +1, +2
12. Boiling/melting point The melting point is 54.8 K (-218.35 °C). The boiling point is 90.19 K
13. Isotopes Oxygen-16 Oxygen-17 Oxygen-18
14. Physical properties Oxygen is the gas. Oxygen has no color, no taste, and no smell. Oxygen
15. Prevalence in nature It forms 21 % of the atmosphere, 89 % 0f the water, 50%
16. Оxygen deposit It occurs in the atmosphere, in water, in the earth’s crust.
17. Мethods of obtaining oxygen It is easily prepared in the laboratory by heating potassium chlorate. It
18. Сhemical properties Flammability - Does not burn; Combustion - Supports combustion but does not burn; Compounds
19. Application in industry Oxygen is actively used in: Metallurgy (during welding and cutting metals). The medicine.
20. The biological role The presence of oxygen (in combination with water) has made life possible on
22. Скачать презентацию

Слайд 2

Formula
O2

Слайд 3

Transcription
['ɔksiʤ(ə)n]

Слайд 4

Etymology
It is derived from Greek and it means «acid former».

Слайд 5

Position in the periodic table
Oxygen is in group 16 and period 2
of the Periodic

table.

Слайд 6

Нistory of discovery
Oxygen was obtained by C. W. Scheele and J.

Priestley independently.

Слайд 7

Structure
The oxygen molecule consists of two atoms. The mechanism of its

formation is non-polar covalent. The bond between the oxygen molecules is also covalent and non-polar, besides this, it is double because each of the oxygen atoms has two unpaired electrons at the external level.

Слайд 8

Electronic configuration
1s22s22p4

Слайд 9

Atomic mass
16 grams per mole

Слайд 10

Radius of the oxygen atom
60

Слайд 11

Valence
–2, −1, –½, –⅓, 0, +½, +1, +2

Слайд 12

Boiling/melting point
The melting point is 54.8 K (-218.35 °C). The boiling

point is 90.19 K (-182.96 °C).

Слайд 13

Isotopes
Oxygen-16
Oxygen-17
Oxygen-18

Слайд 14

Physical properties
Oxygen is the gas.
Oxygen has no color, no taste, and

no smell.
Oxygen can be dissolved in organic substances, absorbed by coal and metal powders.

Слайд 15

Prevalence in nature
It forms 21 % of the atmosphere, 89 %

0f the water, 50% of the earth’s crust.

Слайд 16

Оxygen deposit
It occurs in the atmosphere, in water, in the earth’s

crust.

Слайд 17

Мethods of obtaining oxygen
It is easily prepared in the laboratory by

heating potassium chlorate.
It is made commercially mainly by the distillation of liquid air.

Слайд 18

Сhemical properties
Flammability - Does not burn;
Combustion - Supports combustion but does

not burn;
Compounds - Occurs in many compounds, including water, carbon dioxide, and iron ore;
Oxidation - The common reaction in which it unites with another substance is called oxidation;
Oxides of some metals form peroxides by the addition of oxygen.

Слайд 19

Application in industry
Oxygen is actively used in:
Metallurgy (during welding and cutting

metals).
The medicine.
Agriculture.
Like rocket fuel.
For purification and disinfection of water.
The synthesis of certain chemical compounds, including explosives.

Слайд 20

The biological role
The presence of oxygen (in combination with water) has

made life possible on our planet.
Oxygen in the upper atmosphere forms the ozone ball, which protects all the inhabitants of the Earth from harmful ultraviolet solar radiation.