Or the other name of it is Enriched Water, Anyone knows what is it? any good defination? Thank You...
2006-09-06 02:40:17 · 12 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Heavy water is a loose term which usually refers to deuterium oxide, D2O or 2H2O. Its physical and chemical properties are somewhat similar to those of light water, H2O. The hydrogen atoms are of the heavy isotope deuterium, in which the nucleus contains a neutron in addition to the proton found in the nucleus of the hydrogen atom. This isotopic substitution alters the bond energy of the hydrogen-oxygen bond in water, altering the physical, chemical, and especially biological properties of the substance to a larger degree than is found in most isotope-substituted chemical compounds.
Heavy water should not be confused with hard water or with tritiated water; however heavy water can be used to create tritium, a principal source of energy release in a thermonuclear weapon.
2006-09-06 02:55:39 · answer #1 · answered by dipydoda 3 · 0⤊ 0⤋
Heavy water is like regular water except that instead of two hydrogen atoms and an oxygen atom (H20) it has two deuterium atoms and an oxygen atom (D20). Deuterium is a hydrogen atom with an extra neutron.
Water is used in nuclear reactors to moderate the reaction speed, and to absorb heat. Nuclear fission starts by giving off neutrons that create a chain reaction. Any water around it absorbs those neutrons (becoming heavy water) and slows the reaction. If heavy water is used instead of regular hydrogen water, the neutrons are not absorbed. This means that less pure nuclear material can be used to sustain a reaction. For example unrefined uranium, which is much less expensive, can be used instead of enriched uranium.
2006-09-06 04:35:12 · answer #2 · answered by aahs137 3 · 0⤊ 0⤋
Heavy water an isotopicof water H2O having a mass 18 grams per mol because Hydroge mass is1 andOxygen is 16. The chemical composition of heavy waterh is D2O ( Deuterium oxide) and having a mass of 20 grams per mole then it's density becomes 11% higher than light water.
2006-09-06 02:55:12 · answer #3 · answered by Faisal 2 · 0⤊ 0⤋
Normal ("light") water has a mass of 18 grams per mol because H (Hydroge) has mass 1 and O (Oxygen) 16.
Heavy water contains a heavier isotope of H, typically with a mass of 2 (deuterium). This gives heavy water a mass of 20 grams per mol, so that the density becomes 11% higher than light water. If the H has a mass of 3 (tritium), the mass of the water becomes 22.
2006-09-06 02:45:27 · answer #4 · answered by helene_thygesen 4 · 0⤊ 0⤋
There are three different forms of hydrogen, and heavy water is composed of deuterium and oxygen. It was used during the early studies of nuclear energy. Most elements have isotopes that are lighter or heavier than the normal form and therefore have somewhat different characteristics, and some forms such as Iodine 131 are radioactive. This refers to the atomic weight of an atom.
2006-09-06 02:50:14 · answer #5 · answered by Frank 6 · 0⤊ 0⤋
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2016-11-25 00:23:03 · answer #6 · answered by Anonymous · 0⤊ 0⤋
a normal water molecule contains 2 Hydrogen atoms and one Oxygen atom.
'heavy water' contains 1 or 2 Deuterium atoms and one Oxygen.
Deuterium is an isotope of Hydrogen, which has a neutron in the nucleus as well as a proton.
2006-09-06 02:46:41 · answer #7 · answered by Morgy 4 · 0⤊ 0⤋
Heavy water
A form of water in which the hydrogen atoms of mass 1 (1H) ordinarily present in water are replaced by deuterium (D or 2H), the heavy stable isotope of hydrogen of mass 2. The molecular formula of heavy water is D2O (or 2H2O). See also Deuterium.
Because the mass difference between 1H and 2H is the largest for any pair of stable (nonradioactive) isotopes in the periodic table, many of the physical and chemical properties of the pure isotopic species and their respective compounds differ to a significant extent. Selected physical properties of 1H2O and 2H2O are compared in the table.
http://www.answers.com/heavy%20water
2006-09-06 03:30:37 · answer #8 · answered by Anonymous · 0⤊ 0⤋
Heavy water is nothing but an isotopic form of natural water i.e H2O , the chemical composition of heavy water is D2O i.e Deuterium oxide.
2006-09-06 02:43:11 · answer #9 · answered by soumo_xyz 1 · 0⤊ 0⤋
As far as I know 'heavy water' is just another term for 2H2O, which is just deuterium (heavy hydrogen) oxide.
2006-09-06 02:46:09 · answer #10 · answered by kat g 3 · 0⤊ 0⤋