physical and chemical properties of oxygen pdf

Physical And Chemical Properties Of Oxygen Pdf

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Gaseous chemical element, symbol: O, atomic number: 8 and atomic weight 15, Nearly one fifth in volume of the air is oxygen. Non-combined gaseous oxygen normally exists in form of diatomic molecules, O 2 , but it also exists in triatomic form, O 3 , named ozone. In normal conditions oxygen is a colourless, odourless and insipid gas; it condensates in a light blue liquid. Liquid oxygen is also slightly paramagnetic.

It is a member of the chalcogen group in the periodic table , a highly reactive nonmetal , and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. After hydrogen and helium , oxygen is the third- most abundant element in the universe by mass. At standard temperature and pressure , two atoms of the element bind to form dioxygen , a colorless and odorless diatomic gas with the formula O 2. Diatomic oxygen gas constitutes Oxygen makes up almost half of the Earth's crust in the form of oxides. Dioxygen provides the energy released in combustion [3] and aerobic cellular respiration , [4] and many major classes of organic molecules in living organisms contain oxygen atoms, such as proteins , nucleic acids , carbohydrates , and fats , as do the major constituent inorganic compounds of animal shells, teeth, and bone. Most of the mass of living organisms is oxygen as a component of water , the major constituent of lifeforms.

The chemical characteristics of the waters of Lake Budi IX Region, Chile , in winter and summer were analysed in order to establish seasonal variations and determine their influence on the various phytoplankton components. On the basis of the results it was possible to indicate that the chemical parameters found in the water body under examination vary in time and space, giving rise to different algal communities. The strong influence of salinity on the phytoplankton communities in both study periods appears to result principally from the influence of the sea, resulting from the intrusion of salt water during certain periods of the year. The predominant chemical characteristic in summer indicates a slight reduction in water quality, due to a rise in temperature and a reduction in the oxygen concentration. Keywords : Lake Budi, salinity, phytoplankton, water quality.

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Allotropes Some elements exist in several different structural forms, called allotropes. Each allotrope has different physical properties. For more information on the Visual Elements image see the Uses and properties section below. Group A vertical column in the periodic table. Members of a group typically have similar properties and electron configurations in their outer shell. Period A horizontal row in the periodic table. The atomic number of each element increases by one, reading from left to right.

One can use their five senses to determine the Physical or Chemical properties of a substance. Physical change c. Freezing d. This quiz covers basic properties of matter. Other chemical properties are ability to rust and flammability. Types: Lesson Plans Bundled , Activities. Matter and Changing of Matter Worksheet.

Oxygen is an important part of the atmosphere and is necessary to sustain terrestrial life. Because it comprises most of the mass in water, it also comprises most of the mass of living organisms. All major classes of structural molecules in living organisms, such as proteins, carbohydrates, and fats, contain oxygen, as do the major inorganic compounds that comprise animal shells, teeth, and bone. Elemental oxygen O 2 is produced by cyanobacteria, algae, and plants through the process of photosynthesis, and is used in cellular respiration by most living organisms on earth. Oxygen is toxic to obligate anaerobic organisms organisms which need a lack of oxygen for survival , which were the dominant form of early life on Earth, until O 2 began to accumulate in the atmosphere. At standard temperature and pressure STP , two atoms of the element bind to form dioxygen, a colorless, odorless, tasteless diatomic gas with the formula O 2. Oxygen is a member of the chalcogen group on the periodic table and is a highly reactive nonmetallic element.


In normal conditions oxygen is a colourless, odourless and insipid gas; it condensates in a light blue liquid. Oxygen is part of a small group of gasses literally.


Oxygen - O

What are the Properties of Oxygen? Definition of Oxygen What is the definition of Oxygen? It is a colorless, tasteless, odourless gaseous element that constitutes 21 percent of the atmosphere and is found in water, in most rocks and minerals, and in numerous organic compounds. It is capable of combining with all elements except the inert gases and is involved especially in combustion processes.

Я протестую… - У нас вирус, сэр. Моя интуиция подсказывает мне… - Что ж, ваша интуиция на сей раз вас обманула, мисс Милкен.

Chemical Properties of Oxygen

Она побледнела. - Что с тобой? - удивленно спросил Хейл. Сьюзан встретилась с ним взглядом и прикусила губу. - Ничего, - выдавила. Но это было не .

На нем располагался щедрый набор фирменных открыток отеля, почтовая бумага, конверты и ручки. Беккер вложил в конверт чистый листок бумаги, надписал его всего одним словом: Росио - и вернулся к консьержу. - Извините, что я снова вас беспокою, - сказал он застенчиво.

Мы столкнулись с врагами, которые, как мне казалось, никогда не посмеют бросить нам вызов. Я говорю о наших собственных гражданах. О юристах, фанатичных борцах за гражданские права, о Фонде электронных границ - они все приняли в этом участие, но дело в другом.

Когда его обвиняли в фаворитизме, он в ответ говорил чистую правду: Сьюзан Флетчер - один из самых способных новых сотрудников, которых он принял на работу.

Высший уровень. К отчетам о секретных операциях. К зарубежной агентурной сети. Им станут известны имена и местонахождение всех лиц, проходящих по федеральной программе защиты свидетелей, коды запуска межконтинентальных ракет. Мы должны немедленно вырубить электроснабжение.

4 comments

Karin F.

Free elemental oxygen occurs naturally as a gas in the form of diatomic molecules, O2 (g). Oxygen exhibits many unique physical and chemical properties.

REPLY

Benigna B.

Oxygen O , nonmetallic chemical element of Group 16 VIa, or the oxygen group of the periodic table.

REPLY

Etherconde

Oxygen is the first element in Group 16 VIA of the periodic table.

REPLY

Augustine G.

Where is this substance collected? 4) Two notable physical properties of oxygen are its low solubility in water and a density greater than air. a. Which one of.

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