Pure water does not contain colour
but impure water contains Other compounds.
Boil it
yes water is mixture of many impure substances and bacteria.even pure water has some bacterias.
Pure water is a non-conductive substance that is toxic to life, and corrosive of most metals. Impure water is water that has impurities, such as salts, hardness, metal ions, and so on.
Any chemical may be pure or impure.
Some common apparatus for obtaining pure water from impure water include distillation setups, reverse osmosis systems, and filtration units. These apparatus work by separating the impurities from the water, resulting in purified water.
pure
The contrast is between "pure" and "applied", not between "pure" and "impure". Pure science investigates questions without regard to any practical applications that might derive from answering the questions. Applied science chooses questions to investigate based on the anticipated usefulness of answering the question. Anyone using the term "impure science" is just making a joke.
A refinery will pay less for impure gold than pure gold.
Pure
pure substance all elements and compounds like gold, hydrogen, water, methane etc. impure substance mixtures of different substances like milk, soil, sea water, minerals etc
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One method to obtain pure copper sulfate from an impure sample is by recrystallization. In this process, the impure sample is dissolved in water, and then the solution is heated and slowly cooled to allow pure copper sulfate crystals to form. These crystals are then filtered out and dried to obtain the pure compound.