Information about gold coins and bullion
Gasoline is a homogeneous distillate from light, sweet, crude…but now most places will mix in ethanol which would make it a mixture.
Lead is an element, and therefore a pure substance.
Smog is made up of several different gasses including CO2 and CO making it a mixture.
Brass is an alloy made from copper and zinc, and therefore a mixture
24k gold is pure gold, therefore a pure element and a pure substance (wow, that’s a lot of pure for one sentence)
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December 9th, 2009 at 7:45 am
Gasoline is a homogeneous distillate from light, sweet, crude…but now most places will mix in ethanol which would make it a mixture.
Lead is an element, and therefore a pure substance.
Smog is made up of several different gasses including CO2 and CO making it a mixture.
Brass is an alloy made from copper and zinc, and therefore a mixture
24k gold is pure gold, therefore a pure element and a pure substance (wow, that’s a lot of pure for one sentence)