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A flame test is relatively quick test for the presence of some elements in a sample. The technique is archaic and of questionable reliability, but once was a component of qualitative inorganic analysis .
Maintenance testing – Identify equipment problems through routine testing; Materials science – Research of materials; Nondestructive Evaluation 4.0 – A concept of industrial testing and evaluation for the digital age; Predictive maintenance – Method to predict when equipment should be maintained
In other projects Wikidata item; Appearance. ... This is a list of Advanced Level (usually referred to as A-Level) subjects ... Science in Society [7] [9] Use of ...
The halogen lamp reduces uneven evaporation of the filament and eliminates darkening of the envelope by filling the lamp with a halogen gas at low pressure, along with an inert gas. The halogen cycle increases the lifetime of the bulb and prevents its darkening by redepositing tungsten from the inside of the bulb back onto the filament. The ...
In analytical electrochemistry, coulometry is the measure of charge transfer during an electrochemical redox reaction. [1] It can be used for precision measurements of charge, but coulometry is mainly used for analytical applications to determine the amount of matter transformed.
where M is the metal, X is the halogen, and MX n is the metal halide. Sample of silver chloride. In practice, this type of reaction may be very exothermic, hence impractical as a preparative technique. Additionally, many transition metals can adopt multiple oxidation states, which complicates matters. As the halogens are strong oxidizers ...
Friedel–Crafts test for aromatic hydrocarbons [ edit ] Reaction of chloroform with aromatic compounds using an aluminium chloride catalyst gives triarylmethanes, which are often brightly colored, as is the case in triarylmethane dyes.
A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.