Penny's were at one time pure copper, but copper is too expensive, so the mint changed to a zinc core clad in copper.
Most coins in circulation are made from alloys of metals. An alloy is a mixture of elements and compounds.
Dime is a Compound. But they al say it is a colide together because in a dime there is mixture and compunds
Pure
Pure substance.
Soda water is a mixture not a pure substance
It is a mixture of compounds.
Toluene is a compound. not a mixture
The opposite of a pure substance is a mixture.
pure
pure substance?
Pure substance.
No, it is a mixture; rarely a drug is a pure substance.
No a mixture is by definition not a pure substance.
pure substance
It is a mixture of substances
pure substance, propanone
rice pudding a pure substance or a mixture and is it a homogenous or heterogenous
pure substance
Pure Substance
Pure substance