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What color range did the substance show when tested with the indicator paper?
Wiki User
∙ 14y ago
Indicator paper is a common name for litmus paper. Litmus paper tests pH. The color range is red to purple, when red is very acidic (pH of 1) and purple is very basic (pH of 14). In between the spectrum are the other pH values. Green is neutral (a pH of 7). Yellow and orange are acids also, ranging from a pH of 2-6. Teal and blue are bases, with pH ranging from 8-13. Hope this helps!
Wiki User
∙ 14y ago
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An indicator does which one of the following in the presence of acids and bases?
Indicators can be used to determine if a substance is a acid or a base because of the reaction that occurs between the substance and the indicator. This creates a color change in the indicator (depending on which indicator you use). If it is a universal indicator, the substance may change from deep red to violet. If it is a litmus indicator, it will only turn either red or blue.
A compound that changes color when in contact with an acid or a base is called?
A substance that changes color in the presence of an acid or base is called an indicator.
When a base is added to red litmus paper he indicator turns what color?
Blue
What are litmus paper?
Litmus is a natural dye indicator extracted from lichens.They react with acid (blue litmus turns red)& bases(red litmus turns blue) .Paper made with litmus dye indicators are called litmus paper and used in chemical laboratories.
What substance turns different colors in an acid and a base?
The classification of chemicals that are sensitive to changes in pH are known as indicators. There are many long chemical names for many but something as common as purple grape juice will show a color change in the presence of changing pH.
What color does the indicator paper turn if the substance is a strong acid?
If you are testing with Universal Indicator or the Litmus Test it will turn red.
An indicator does which one of the following in the presence of acids and bases?
Indicators can be used to determine if a substance is a acid or a base because of the reaction that occurs between the substance and the indicator. This creates a color change in the indicator (depending on which indicator you use). If it is a universal indicator, the substance may change from deep red to violet. If it is a litmus indicator, it will only turn either red or blue.
How are acids and bases tested?
universal indicator or litmus paper
What is an indicator and how does it work?
Indicators are devices, usually slips of paper, that change color or color density to "indicate" a certain property, such as pH of a substance (usually dissolved in water).
How are Ph levels of a swimming pool tested?
Usually the ph is tested with a phenol red indicator but litmus paper can be used
Is universal indicator paper the same as blue litmus paper?
No totally different, universal indicator is a mixture of chemical which shows the precise p.H of a substance, blue litmus paper reveals whether the substance is acidic or alkaline.
What factors could be tested using litmus paper?
The acidity or alkalinity of a solution, pH indicator.
A compound that changes color when in contact with an acid or a base is called?
A substance that changes color in the presence of an acid or base is called an indicator.
What is a chemical indictor?
There is no such thing as a chemical "indictor". However a chemical "indicator" is:- It is a test that is used to determine the Ph of a substance, which leads to finding out if its an acid or base. There are many different kinds of indicators such as litmus paper and universal indicator, that when reacted with a substance change color to show you if it's an acid or base.
How can macromolecules be detected in foods?
We just did this in class and I am working on the lab write-upright now, haha. Ok, to detect macromolecules in foods you use chemical indicators. An indicator is a substance that changes to indicate the presence of a particular compound or type of compound. The indicator may change color or temperature, or produce some other substance, such as, bubbles or a distinctive odor. The change in the indicator is due to a chemical reaction between the indicator and the tested substance. Indicators are very specific and work based on the chemical composition of the indicator and of the substance being detected. Some indicators are sensitive to temperature, pH, and other environmental conditions so it is necessary to know the optimal conditions for using each indicator. Generally, the easiest indicators to use are ones that change color to indicate the presence of a substance. Here are some different tests: Benedict's solution is an indicator that can be used to test for monosaccharides (simple sugars). Benedict's solution is light blue in color. However, when it is heated in the presence of simple sugars, it turns from blue to green or yellow/orange or even to red. The final color depends on the amount and type of monosaccharide. Benedict's solution needs to be heated to work properly.(Or you can use a glucose strip, its much easier, its a piece of paper and you put the end with the colored square in the substance and if it changes color then it has sugar in it) Lugol's Iodine can be used as an indicator for starch. Lugol's Iodine is yellow or light brown in color; in the presence of starch, it turns dark purple or even black. Biuret solution is a protein indicator. Biuret solution is a light blue color; in the presence of protein, the color changes to violet or purple. The shade or darkness of the color depends on the type and concentration of the protein, and can range from a very light violet to a deep purple. Fats and lipids leave a translucent mark on brown paper. Translucent means light can pass through, although distinct images may not be seen through it. Moist foods can be applied directly to brown paper to test for lipids; dry foods can be tested once they are made into an alcohol extract. This is done by grinding the food and placing it in alcohol, and applying samples of the liquid extract to the paper.
What color does indicator paper turn when dipped in a strong base?
yellow
When a base is added to red litmus paper he indicator turns what color?
Blue
