Oxygen (O₂) (intermediate)

Oxygen (O₂) (intermediate)

A colourless, odourless gas, an important component of the atmosphere, indispensable to sustain terrestrial life.

Chemija

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Deguonis, Deguonies molekulė, Homonuclear molekulė, Obligacijų struktūra, Kovalentinis ryšys, Sigma obligacija, Pi bond, dviguba obligacija, nepolinis, gyvenimo sąlyga, Kvėpavimas, Oras, degimas, Oksidas, Egzoterminis, Fotosintezė, Neorganinė chemija, Chemija

Susiję elementai

Vaizdai

Susiję elementai

Oxygen cycle

The oxygen cycle describes the movement of oxygen within its three main reservoirs.

Ozone (O₃)

An allotrope of oxygen, consisting of 3 oxygen atoms.

Respiratory system

The respiratory system is responsible for the intake of oxygen and the release of carbon dioxide.

Ozone layer

The ozone layer filters the Sun´s harmful UV radiation, therefore it is indispensable for life on Earth.

Reaction of hydrogen with oxygen

Knallgas is the mixture of hydrogen and oxygen. It will explode when ignited.

The human blood

Human blood consists of blood cells and plasma.

Chlorine (Cl₂)

A yellow-green toxic gas with a strong odour, one of the halogens.

Effects of smoking on the lungs

Smoking severely damages the respiratory system, it may cause COPD or lung cancer.

Formation of hydrogen molecules

Hydrogen atoms within hydrogen molecules are held together by a covalent bond.

Fuel cell

A fuel cell provides environment-friendly electric energy produced by the chemical reaction between oxygen and hydrogen.

Hydrogen (H₂)

Colourless, odourless, lighter-than-air gas. The most common chemical element in the universe.

Hydrogen peroxide (H₂O₂)

The compound of hydrogen and oxygen. Colourless, odourless liquid; heavier than water.

Hydrogen sulphide (H₂S)

A colourless, toxic gas with the characteristic odour of rotten eggs. It occurs in certain mineral waters and spring waters.

Hydronium ion (H₃O⁺)

The presence of hydronium ions relative to hydroxide ions determines a solution´s pH.

Hydroxide ion (OH⁻)

A compound ion formed when a water molecule releases a proton.

Hypochlorite ion (OCl⁻)

Hypochlorite ions are formed when water is disinfected with chlorine.

Nitrogen (N₂) (intermediate)

A colourless, odourless, non-reactive gas, it constitutes 78.1% of Earth´s atmosphere.

Nitrogen monoxide (Nitric oxide) (NO)

A colourless, heavier-than-air gas, an intermediate in the production of nitric acid.

Nitrogen-dioxide (NO₂)

A reddish-brown toxic gas, very reactive due to its unpaired electron.

Photosynthesis (basic)

Plants are capable of converting inorganic substances (carbon dioxide and water) into organic sugar.

The science of candles

Candles have been used for lighting since ancient times.

Water (H₂O)

Water is a very stable compound of hydrogen and oxygen, vital for all known forms of life. In nature it occurs in liquid, solid and gaseous state.

What is the human body composed of?

This scene presents the basic components of the human body.

Photosynthesis

Plants are capable of converting inorganic substances (carbon dioxide and water) into organic sugar.

Ethyne (acetylene) (C₂H₂)

The first member of the homologous series of alkyne hydrocarbons.

Oxygen (O₂) (beginner)

A colourless, odourless gas, an important component of the atmosphere, indispensable to sustain terrestrial life.

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