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A colourless, odourless gas, an important component of the atmosphere, indispensable to sustain terrestrial life.
oxygen, oxygen molecule, homonuclear molecule, condition for life, respiration, air, covalent bond, double bond, sigma bond, pi bond, nonpolar, oxide, exothermic, photosynthesis, inorganic chemistry, general chemistry, chemistry
This animation demonstrates the main sources of air pollution: agriculture, industry and urban settlements.
Colourless, odourless gas, highly toxic to humans and animals in high concentration.
A colourless, odourless, non-reactive gas, it constitutes 78.1% of Earth´s atmosphere.
An allotrope of oxygen, consisting of 3 oxygen atoms.
The ozone layer filters the Sun´s harmful UV radiation, therefore it is indispensable for life on Earth.
Knallgas is the mixture of hydrogen and oxygen. It will explode when ignited.
The respiratory system is responsible for the intake of oxygen and the release of carbon dioxide.
Colourless, odourless, heavier-than-air gas. Necessary for the photosynthesis of plants.
This animation demonstrates the type of engine most commonly used in cars.
Oxygen carrier protein in our red blood cells.