There is multiple, the most common would probably be Litmus Paper and Universal Indicator. The properties they have (the relavent ones) is that they turn a certain color when mixed with an acid or base.
The plural of practicum is practicums or the little-used practica.
There are many different indicators in chemistry which can be blue. Some indicators indicate the presence of a species such as a metal ion, whereas others are pH sensitive. The exact meaning depends on the specific indicator used. For example, blue litmus paper indicates a basic solution.
Litmus paper, Turmeric paper Methyl orange, Phenolphtalein,
glass prism re used 4 physics practicals
Density, crystallography, mineralogy, method of formation, chemistry, texture, hardness, and others.
It is actually a chemical word used during titration.in chemistry practicals endpoint are given to enable student work along the given point or titre value.if the endpoint of a student during practical surpass that of the teacher he needs to recheck his calculations again.
Indicators are used frequently for testing pH; but many other indicators exist for other compounds or ions.
Forex indicators are tools used to try and evaluate the market predictions. http://www.forexindicators.net/
Internal indicators that are used in titration exist in the titration reaction as either a reactant or a product. External indicators is added to the reaction mixture, but does not exist in the reaction.
in chemistry
chemistry
Forex indicators are used to detect patterns in the foreign exchange market. In order to correctly identify patterns, Forex indicators look for changes in economic and industry conditions. http://www.forexmarketexplained.com/Top_Five_Economic_Indicators_that_Drive_Forex_Trading.html