Oxygen was discovered by a number of scientists over a fairly brief time period first discovery is normally credited to the swedish scientist carl wilhelm sc. The four elements common to all living organisms are oxygen (o), carbon (c), hydrogen (h), and nitrogen (n), which together make up about 96% of the human body in the nonliving world, elements are found in different proportions, and some elements common to living organisms are relatively rare on the earth as a whole. Essay oxygen oxygen and its compounds play a key role in many of the important processes of life and industry oxygen in the biosphere is essential in the processes of respiration and metabolism, the means by which animals derive the energy needed to sustain life furthermore, oxygen is the most abundant element at. Free essay: selenium itself is a nontoxic element, but when made into a compound, it can become very toxic for example, hydrogen selenide is intolerable to. Chemistry is the study of physical matter, which is classified in many different ways, such as state of matter (gas, liquid or solid), chemical form (element, mixture the element oxygen is part of the mixture air and some of the properties of air are due to the oxygen, albeit somewhat reduced compared with pure oxygen due. The importance of the mole concept can be summed up as follows: any statement that can be made about the number of atoms of an element in a molecule or formula unit of a substance can also be made about the number of moles of an element in example: hemoglobin is the oxygen-carrying protein of most mammals.
Because atoms cannot be created or destroyed in a chemical reaction, elements such as phosphorus (p4) or sulfur (s8) cannot be broken down into simpler substances by these reactions example: water decomposes into a mixture of hydrogen and oxygen when an electric current is passed through the liquid hydrogen. The importance of oxygen most of us suffer from a lack of oxygen whether from improper breathing (see importance of proper breathing), poor diets, air pollution or lack of exercise, our cells are being deprived of this vital element and thus weakening our immune system oxygen (o2) is one of the most important elements. I plan to educate those who read this paper on what they might not know of a few of our elements i will tell you what i have learned over the oxygen group on the elemental table i will talk about oxygen, sulfur, selenium, tellurium, and last but not least polonium these elements have changed our way of life and history in. Though oxidation was once considered to be simply the combination of oxygen with any compound or element, the meaning of the word has been expanded to include any reaction in which atoms lose electrons, thereby becoming oxidized as has been pointed out, in any oxidation process the oxidizer takes electrons from.
Oxygen is also one of the elements must found in earth oxygen can be found in in metals, water, and even the one thin that protects us from the powerful sunrays oxygen is a very unstable element, which makes it easy to make compounds with other elements creating different kinds of solids and liquids [tags: essays. Oxygen is usually found in the air and water although it is mixed with many other elements the way to get oxygen by itself is through electrolysis of the water in which electricity is run through water until it separates into oxygen and hydrogen another way is to cool the air until separate elements turn into. Oxygen (o) is a chemical element in nature, oxygen is a gas with no color or smell oxygen is a very important element because we need it to live it is a part of the air people breathe and the water people drink many living things ( including humans) need oxygen to live and breathe, though it is poisonous to some forms of.
Lavoisier considered as father of modern chemistry and was a french nobleman prominent in the histories of chemistry and biology in 1783, he was the first person to succeed in determining the composition of water and in synthesizing the compound from its elements lavoisier coined name as oxygen in the year of 1778. Oxygen is the most common chemical element found on or in earth it is one of the main elements that make up air, and it is necessary for the survival of all plants and animals scientists use symbols to stand for the chemical elements the symbol for oxygen is ooxygen makes up about one fifth of the atmosphere.
99% of the mass of the human body is made up of only six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus every organic molecule contains carbon since 65-90% of each body cell consists of water (by weight), it isn't surprising that oxygen and hydrogen are major components of.