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Alginate, on the other hand, is an irreversible hydrocolloid. It exists in two phases: either as a viscous liquid, or a solid gel, the transition generated by a chemical reaction. [3] The impression material is created through adding water to the powdered alginate which contains a mixture of sodium and potassium salts of alginic acid.
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A colloid is a mixture in which one substance consisting of microscopically dispersed insoluble particles is suspended throughout another substance. Some definitions specify that the particles must be dispersed in a liquid, [1] while others extend the definition to include substances like aerosols and gels.
Taking this one stage further, the clue word can hint at the word or words to be abbreviated rather than giving the word itself. For example: "About" for C or CA (for "circa"), or RE. "Say" for EG, used to mean "for example". More obscure clue words of this variety include: "Model" for T, referring to the Model T.
We put all the best artificial Christmas trees to the test, including Balsam Hill, King of Christmas, and Puleo International.
An American-style 15×15 crossword grid layout. A crossword (or crossword puzzle) is a word game consisting of a grid of black and white squares, into which solvers enter words or phrases ("entries") crossing each other horizontally ("across") and vertically ("down") according to a set of clues. Each white square is typically filled with one ...
"There is an alert that's out right now that radioactive material in New Jersey has gone missing on Dec. 2. There was a shipment that arrived at its destination. The container was damaged and was ...
Irreversible adiabatic process: If the cylinder is a perfect insulator, the initial top-left state cannot be reached anymore after it is changed to the one on the top-right. Instead, the state on the bottom left is assumed when going back to the original pressure because energy is converted into heat.