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What is the correct scientific term for a substance that changes colour in this way?
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Which substance changes the colour of pH paper into greenish?
This depends on the kind of pH paper.
What is physically happening when water is dissolving a substance?
when we dissolve a substance then first of all there may occur physical change like shape,colour,temperature etc. these changes are called physical changes.
What is so special about universal indicator?
why universal indicator is called universal indicator?
What is the appearance of salt solution?
Generally the appearance is that of a dusty substance, the colour changes depending on the acidity of the solution when it was in its liquid form and if an indicator was used, usually it is white and dusty. :)
What substance is yellow-brown in colour?
Iodine
What is the correct scientific term for a substance that changes colour in this way for litmus?
indicator
Which substance changes the colour of pH paper into greenish?
This depends on the kind of pH paper.
What is an acid and base?
An acid base indicator is a substance that changes colour due the PH of the medium in which it is dissolved.
What is an indicator as related to an acid and a base?
It is a substance(chemical or natural) which changes colour in the presence of an acid or base.
What name is given to a substance which changes colour in acids and alkali's?
Universal Indicator. NB Litmus paper onl;y changes from red to blue.
What is special about universal indicator?
It changes colour depending on the pH of the substance put on it. It is a quick and easy way of identifying the pH of a substance, however it is not 100% accurate.
What is physically happening when water is dissolving a substance?
when we dissolve a substance then first of all there may occur physical change like shape,colour,temperature etc. these changes are called physical changes.
What substance gives plants their green colour?
Chlorophyll is the substance that gives plants their green colour.
What are the five signs of a physical reaction?
colour change gas bubbles new substance formed texture changes something else i don't know about.
What treatment makes a white diamond partially purple on the inside?
Diamond treatments to change colour are irradiation. Depending on the original, natural colour of the stone, irradiation will enhance whatever exists in the stone. The process does not add or subtract any physical substance, it simply changes the existing substance.
What is so special about universal indicator?
why universal indicator is called universal indicator?
How does Lugol's solution work as an indicator?
An indicator is a substance that changes colour in the presence of another substance. Let say inside the beaker are substances of both glucose and starch. The glucose and starch are of same colour. By injecting the lugol's solution into the beaker, the lugol's solution changes colour in the area of where starch is, while no colour changes in the presence of glucose. Thus, by using the Lugol's solution which only acts as indicator for starch and not glucose, we could tell part which area floats around with glucose and starch substances. Lugol's solution works as an indicator because it will stain starches due to iodine's interaction with the coil structure of the polysaccharide.
