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Would you expect RF number of a pigment to change if we altered the composition of the solvent why or why not?
Wiki User
∙ 8y ago
No, the solubility of the pigment molecule in its organic solvent is a factor involved in the separation of pigments. More soluble molecules move faster and generally travel further. Chlorophyll B is a great example since its only soluble in fat solutions.
Wiki User
∙ 12y ago
Wiki User
∙ 6y agoNot usually. It is a balance between the solubility in the solvent and attraction for the non-mobile phase.
Wiki User
∙ 6y agoIt is possible that they'd be the same, but that would be very fortuitous. Normally they change with a change in mobile phase (solvent system).
Anonymous
yes
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Is sucrose dissolving a chemical change?
No, it is a physical change because the molecules of sucrose are not altered, just suspended in a solvent.
Is Sodium thiosulphate Dissolving in water physical change?
Yes. Dissolving is a physical change because it does not change the chemical composition of either the solute or the solvent.
Is mixing a salad dressing chemical change?
no. it is physical because the composition of the mixing are not chemically altered but only physically mixed. That means that they could be separated without chemically altering the composition again.
Does the composition of the ice change when it melts?
The composition of ice is H2O, and once it melts to water, its composition is ... H2O! So, no, the composition does not change.
What happens to the composition of matter when matter undergoes a chemical change?
A chemical change involve a change of composition.
A change during which the basic composition of the substance is not altered is?
Physical Change
A change duing which the basic composition of the substance is not altered is a?
is a physical change
Is sucrose dissolving a chemical change?
No, it is a physical change because the molecules of sucrose are not altered, just suspended in a solvent.
In a physical change some of the physical properties of the substance may be altered and the chemical composition?
No. In a physical change, the substance maintains its chemical composition.
Physical Change?
Changes of the matter that do not change the composition of the substance.
Is Sodium thiosulphate Dissolving in water physical change?
Yes. Dissolving is a physical change because it does not change the chemical composition of either the solute or the solvent.
Is paint a chemical?
yea its a physical change cause i said so
Is mixing a salad dressing chemical change?
no. it is physical because the composition of the mixing are not chemically altered but only physically mixed. That means that they could be separated without chemically altering the composition again.
Is evaporation a chemical or a physical?
Evaporation is an example of a physical change, as the chemical composition of the substance is not altered in any way.
What is A magnet erasing a computer disk is that a physical or chemical?
Magnetic erasing of a computer disk is a physical change. The polarity of the molecules in the storage media is altered, but the material retains the same composition so it is NOT a chemical change.
Does the composition of the ice change when it melts?
The composition of ice is H2O, and once it melts to water, its composition is ... H2O! So, no, the composition does not change.
What kind of change is taken when paper is burned?
Chemical Change: a usually irreversible chemical reaction involving there arrangement of the atoms of one or more substances and a change in their chemical properties or composition, resulting in the formation of at least one new substance: The formation of ruston iron is a chemical change.It is a chemical change.A physical change is a change that does not change the chemical composition of the material. When water evaporates and condenses it is still water even though it looks different, the same as if you cut or crumple paper. It may look different, but its chemical composition has not be altered.
