Indicators are substances that change colour when they are added to acidic or alkaline solutions. Litmus, phenolphthalein, and methyl orange are all indicators that are commonly used in the laboratory.
What is a simple definition of indicator?
: a substance (as a dye) used to show visually (as by a change in color) the condition of a solution with respect to the presence of a particular material (as a free acid or alkali) litmus and phenolphthalein are acid-base indicators.
What is indicator and examples?
Some examples of indicators are Litmus, turmeric, phenolphthalein, etc. Any material that offers a visual evidence of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution, generally by a colour change are called the chemical indicators.
What is an indicator answer?
An indicator is a substance that changes its color in acidic and basic medium. An indicator shows one color in an acidic medium and different colors in a basic medium so that they are called indicators.
What is an indicator in geography?
Definition. A method used to measure how developed a country or region is compared with others. Economic Indicators.
What is the indicator used in this experiment?
A commonly used indicator for strong acid-strong base titrations is phenolphthalein. Solutions in which a few drops of phenolphthalein have been added turn from colorless to brilliant pink as the solution turns from acidic to basic. The steps in a titration reaction are outlined below.
What is the indication of the indicator?
An indication is an abstract idea. It is a clue, a hint, something you work out or realise and that leads you to a conclusion. An indicator is real. It can be seen. An indicator is a device that measures something directly.
What is an indicator in physics?
chemical indicator, any substance that gives a visible sign, usually by a colour change, of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution. An example is the substance called methyl yellow, which imparts a yellow colour to an alkaline solution.
What is an indicator in chemistry class 10?
Indicators: Indicators are those substances which tell us whether a substance is acidic or basic by change in colour. For e.g., litmus solution. Olfactory indicators: Those substances whose odour changes in acidic or basic media are called lfactory indicators. For e.g., clove, vanilla, onion.
What is indicator in Brainly?
An Indicator is a substance which when added to a solution indicates whether it is an acid or base by changing it’s color . Explanation: For example litmus paper is used to indicate whether a substance is acidic or basic in nature. bolivianouft and 9 more users found this answer helpful.
What is an indicator of a country’s economic development quizlet?
The five economic indicators of development are the GDP, types of jobs, productivity, raw materials and consumer goods. The average individual earns a much higher income in an MDC than in a LDC.
What is meant by indicators of development?
Definition: Usually a numerical measure of quality of life in a country. Indicators are used to illustrate progress of a country in meeting a range of economic, social, and environmental goals.
What is the indicator of economic development?
To assess the economic development of a country, geographers use economic indicators including: Gross Domestic Product (GDP) is the total value of goods and services produced by a country in a year.
