through the copper sulphate test, magnesium sulphate and calcium chloride test.
Soluble
dg
The formation of a precipitate is a chemical change.
Soap, no matter how good a soap is, is soap. The pH will never change in relation to the quality of soap. It is a 'basic' pH'ed molecule (NaOH).
A true solution doesn't contain insoluble particles.
Soluble
Soluble
what is soap is soap suds based in matter
Soap scum is calcium soap of fatty acids. It is the result of soap in hard water-- the fatty acids in soap bond with the calcium ions in hard water and create an insoluble compound.
This sediment is a precipitate, an insoluble matter in the solvent.
dg
Soap is a salt of carboxylic acid (fatty acid) in acidic medium soap forms the corresponding fatty acid which is almost insoluble in water so soap does not work properly.
The formation of a precipitate is a chemical change.
No matter how long I continued to stir it, the salt in the glass of water remained insoluble, which caused me to fail my chemistry lab.
The effects of low total fatty matter in laundry soap are that the laundry soap will not effectively remove grease and other fatty matter from clothing. Instead, it will favor dissolving in water more.
The quality of any given soap is a matter of opinion.