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For the alkali metals, amalgamation is exothermic, and distinct chemical forms can be identified, such as KHg and KHg 2. [4] KHg is a gold-coloured compound with a melting point of 178 °C, and KHg 2 a silver-coloured compound with a melting point of 278 °C. These amalgams are very sensitive to air and water, but can be worked with under dry ...
The amalgamation property has certain connections to the quantifier elimination. In general, the amalgamation property can be considered for a category with a specified choice of the class of morphisms (in place of embeddings). This notion is related to the categorical notion of a pullback, in particular, in connection with the strong ...
Amalgamation is the process of combining or uniting multiple entities into one form. ... (chemistry), the combination of ... Amalgamation property in model theory;
This amalgam is used as a chemical reagent to reduce compounds, such as of imines to amines. The aluminium is the ultimate electron donor, and the mercury serves to mediate the electron transfer and to remove passivating oxide. The reaction and the waste from it contains mercury, so special safety precautions and disposal methods are needed.
The patio process was the first form of amalgamation. However, it is unclear whether this process or a similar process—in which amalgamation occurred in heated vats rather than open patios—was the predominant form of amalgamation in New Spain, as the earliest known illustration of the patio process dates from 1761.
Amalgam filling on first molar. In dentistry, amalgam is an alloy of mercury used to fill teeth cavities. [1] It is made by mixing a combination of liquid mercury and particles of solid metals such as silver, copper or tin.
Indium is a chemical element; it has symbol In and atomic number 49. It is a silvery-white post-transition metal and one of the softest elements. Chemically, indium is similar to gallium and thallium , and its properties are largely intermediate between the two. [ 13 ]
The theory of dense linear orders with a first and last element is complete but not model complete. The theory of groups (in a language with symbols for the identity, product, and inverses) has the amalgamation property but does not have a model companion.