Yes Baking Powder Is A Pure Substance.
Wheat flour is a mixture of many compounds.
If there is no salt or substance that makes it impure it is a pure mixture
mixture
yes water is mixture of many impure substances and bacteria.even pure water has some bacterias.
it is a mixture
impure because they are made of more than 1 substance
Generally an impure material is cheaper than a pure material; the word advantage is not so adequate here - can use pure or impure, this depends on the specific applications.
If a substance in a mixture is preponderant--, if the amount far exceeds the amounts of the other substances in the mixture it is usually called an impure substance. Resource: Separation of the Components of a Mixture Lab -Chemistry
This depends on the specific application of a material.
Any chemical may be pure or impure.
pure
No, a suspension is not a pure substance. It is a mixture of particles dispersed in a liquid, where the particles are not fully dissolved and can be seen with the naked eye.