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Indicators are used to test if something for example whether vinegar is an acid or alkali. Due to the pH scale, 1 - 3 is a strong acid, 4 - 6 is a weak acid, 7 is neutral, 8 - 10 is a weak alkali and 11 - 14 is a strong alkali.

Vinegar should turn orange when added with an indicator, with the pH of about 3.

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12y ago
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5mo ago

Indicators test for the presence or concentration of a specific substance in a sample. They provide a visual or measurable signal (such as color change or numerical value) to indicate the presence or absence of the substance being tested for.Indicators are commonly used in chemical analysis, medical diagnosis, environmental monitoring, and quality control processes.

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What are the different indicators used in the laboratory?

to test if a solution is acidic, alkaline or basic


Where can one buy a Dial Test Indicator?

Dial Test Indicators are used to measure angular displacement, can be either electronic (digital) or analog and can provide a large variety of accuracy and dial sizes. Dial Test Indicators can be purchased at hardware stores such as Home Depot or Builders Warehouse, electronics shops such as Radio Shack or through various online retailers such as FlexBar, Amazon and Little Machine Shop depending on the type of indicator required.


What can indicators identify?

Indicators are used frequently for testing pH; but many other indicators exist for other compounds or ions.


What are the indicators of a ppd test?

Indicators of a positive PPD (purified protein derivative) test for tuberculosis include a raised bump or hardened area at the injection site on the skin. The size of this reaction is measured after 48-72 hours and is considered positive if it exceeds a certain diameter, typically 5-15mm depending on the individual's risk factors. A positive PPD test suggests exposure to the bacteria that causes tuberculosis but does not confirm active disease; further testing is needed for diagnosis.


How do you prepare indicators frum plants?

To prepare indicators from plants, you can crush or grind the plant material and extract the pigment using a solvent like ethanol or water. The extracted solution can then be used to test for specific pH ranges by observing color changes in the presence of acids or bases. Some common plant-based indicators include red cabbage, turmeric, and beets.

Related questions

What has the author Edmund Bishop written?

Edmund Bishop has written: 'Indicators' -- subject(s): Indicators and test-papers


What chemical an you use to test acids and alkali's?

These substances are called pH indicators.


One way to test pH is to use a strip of paper that has several what-hydronium ions- acids-bases-indicators?

One way to test pH is to use a strip of paper that has several indicators. These indicators change color depending on the pH of the solution they are in contact with, allowing for easy identification and measurement of acidity or basicity levels.


What are the different indicators used in the laboratory?

to test if a solution is acidic, alkaline or basic


What are reliability indicators?

Reliability indicators are measures used to assess the consistency and stability of data or results. Common reliability indicators include test-retest reliability, internal consistency (Cronbach's alpha), inter-rater reliability, and split-half reliability. These indicators help researchers determine the trustworthiness and accuracy of their measurements.


What will happen with each what indicators used to test an acid phenolphthalein?

Does mindless behavior like the omg girls


Activities that establish a profile are?

indicators that show a unit's daily routines.


What are OPSEC Activity tip-offs?

They are indicators and vulnerabilities that tell adversaries where to focus their collection efforts


Test for Toxic Mold?

form_title=Test for Toxic Mold form_header=Toxic Mold can be tested for and removed from your place of residence or business. What indicators of mold have you found?=_ Do you have a test kit available?= () Yes () No Has there been any water damage on the property?= () Yes () No


What color is a positive test for protein?

A positive test for protein typically appears as a violet or purple color when using chemical indicators such as Biuret reagent. This color change indicates the presence of proteins in the test sample.


What helps economics judge the overall condition of a particular countrys economy?

A measurement of economic indicators.


Where can one buy a Dial Test Indicator?

Dial Test Indicators are used to measure angular displacement, can be either electronic (digital) or analog and can provide a large variety of accuracy and dial sizes. Dial Test Indicators can be purchased at hardware stores such as Home Depot or Builders Warehouse, electronics shops such as Radio Shack or through various online retailers such as FlexBar, Amazon and Little Machine Shop depending on the type of indicator required.