Heavy water
Heavy Water
Heavy water (pronunciation: /ˈhɛvi ˈwɔːtər/), also known as deuterium oxide (pronunciation: /djuːˈtɪəriəm ˈɒksaɪd/), is a form of water that contains a larger than normal amount of the hydrogen isotope deuterium (pronunciation: /djuːˈtɪəriəm/), also known as "heavy hydrogen", which makes the water "heavier". The chemical formula for heavy water is D2O.
Etymology
The term "heavy water" is derived from the fact that a molecule of heavy water is heavier than a molecule of normal water due to the presence of deuterium, which is heavier than the usual hydrogen. The term "deuterium" comes from the Greek word "deuteros" which means "second", in reference to the two particles, a proton and a neutron, that make up the nucleus of a deuterium atom.
Related Terms
- Isotope: Variants of a particular chemical element which differ in neutron number, and consequently in nucleon number.
- Neutron: A subatomic particle, symbol n or n0, with no net electric charge and a mass slightly larger than that of a proton.
- Proton: A subatomic particle, symbol p or p+, with a positive electric charge of +1e elementary charge and a mass slightly less than that of a neutron.
- Nucleon: Either of the two types of particles (protons or neutrons) found in the nucleus of an atom.
External links
- Medical encyclopedia article on Heavy water
- Wikipedia's article - Heavy water
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