The word 'alkali' is correct and commonly used in written English.
It refers to a type of chemical compound that has a pH level greater than 7 and is capable of neutralizing acids. Alkalis are often found in cleaning products and can be quite corrosive. Example: The scientist added a few drops of alkali to the solution in order to raise its pH level and make it more basic.
Ideally, I'd use fresh Chinese alkali noodles, made with flour, water and lye water which gives them a lovely, bouncy springy texture as well as a yellowish tint.
ONE of the first inklings that chemistry has an underlying pattern was the discovery, early in the 19th century, of lithium, sodium and potassium known collectively as the alkali metals.
A reagent of known concentration is dripped (or titrated, to use the term of art) into the unknown solution in the presence of an appropriate indicator molecule (for example litmus, in the case of a reaction between an acid and an alkali).
The latest gadgets, such as wearable devices, come with batteries built in typically based on a thin sliver of lithium, not a tube packed with manganese dioxide, alkali and zinc.
This was one of the observations that led a German chemist called Johann Döbereiner to wonder if all chemical elements came in families.It took decades to tease out the truth of Döbereiner's conjecture, and thus to construct the periodic table in which the alkali metals form the first column.
They now mostly extract uranium by in-situ leaching (ISL), which pumps alkali or a weak sulphuric acid solution into an isolated, ore-bearing stratum and recovers the mineral in suspension.
The noble gases such as helium remain aloof and unreactive, while the alkali metals can be expected to be silvery and reactive.Such certainties are now being questioned by work showing that special clusters of atoms behave in unexpected ways.
But it is a fitting tribute to Döbereiner's insight that, if all goes well, some time in the next few months will bring the creation of a new alkali metal, element number 119, by his countryman Christoph Düllmann of the GSI Helmholtz Centre for Heavy Ion Research in Darmstadt.
It was not quite the sudden shift from litmus red to blue of an acid being neutralised by an alkali, but it was not far off.When the food was toxin-free, the possums spent an average of 40 minutes of every hour eating safely under treelike cover and only 20 minutes in the risky, ground-like enclosure, and that scarcely changed for 1% and 2% cineole.
The most expensive sort of fuel cell is the alkali cell used in space vehicles.
The remaining oil is treated with an alkali to remove free fatty acids (which form a soap).
