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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!
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Why does the litmus paper need to be damp?
Litmus paper needs to be damp because it relies on a chemical reaction between the paper and the substance being tested. The dampness helps to facilitate this reaction by allowing the substance to dissolve and come into contact with the indicator on the paper. This ensures a more accurate and reliable measurement of the substance's pH level.
What is a substance that changes color?
An example of a substance that changes color is litmus paper. Litmus paper is commonly used in chemistry as an indicator to determine the acidity or alkalinity of a solution, as it changes color in response to the pH level of the substance it is in contact with.
Is it true or false that strong acids turn universal indicator paper purple?
False. Universal indicator paper changes color based on the pH of a substance. Strong acids turn universal indicator paper red, orange, or yellow depending on the strength of the acid. Purple is not a color associated with strong acids on universal indicator paper.
What is the correct scientific term for a substance that changes colour in this way for litmus?
indicator
An indicator does which one of the following in the presence of acids and bases?
An indicator is a substance that changes color in response to changes in acidity or alkalinity (pH). In the presence of acids, indicators change color to indicate acidity, and in the presence of bases, they change color to indicate alkalinity. This color change helps to visually determine the pH of a solution.
Why does the litmus paper need to be damp?
Litmus paper needs to be damp because it relies on a chemical reaction between the paper and the substance being tested. The dampness helps to facilitate this reaction by allowing the substance to dissolve and come into contact with the indicator on the paper. This ensures a more accurate and reliable measurement of the substance's pH level.
What is a substance that changes color?
An example of a substance that changes color is litmus paper. Litmus paper is commonly used in chemistry as an indicator to determine the acidity or alkalinity of a solution, as it changes color in response to the pH level of the substance it is in contact with.
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.
Is it true or false that strong acids turn universal indicator paper purple?
False. Universal indicator paper changes color based on the pH of a substance. Strong acids turn universal indicator paper red, orange, or yellow depending on the strength of the acid. Purple is not a color associated with strong acids on universal indicator paper.
What is the correct scientific term for a substance that changes colour in this way for litmus?
indicator
An indicator does which one of the following in the presence of acids and bases?
An indicator is a substance that changes color in response to changes in acidity or alkalinity (pH). In the presence of acids, indicators change color to indicate acidity, and in the presence of bases, they change color to indicate alkalinity. This color change helps to visually determine the pH of a solution.
How are acids and bases tested?
universal indicator or litmus paper
Is it false that Indicator paper is used to identify acids and bases?
No, it is true. Indicator paper is used to identify acids and bases by changing color in response to the pH of the solution. It can help determine whether a substance is acidic, basic, or neutral based on the color change.
What colour does alkali turn in litmas paper?
Alkalis turn litmus paper blue. Litmus paper is used as an indicator to determine whether a substance is acidic or alkaline based on the color change it undergoes.
What is a substance that is used to determine an acid or a base?
An indicator is a substance that changes color in response to the acidity or basicity of a solution. Common examples include litmus paper, phenolphthalein, and bromothymol blue.
What is an indicator used to detect an acid or base?
An indicator used to detect an acid or base is a substance that changes color in the presence of acids or bases. Examples of indicators include litmus paper, phenolphthalein, and universal indicator solution.
When red and blue litmus paper fail to turn color?
The litmus paper remain unchanged in a neutral solution.
