Air Iron
would you please answer if these are a substance or a mixture?
I have a paper to finish and i need to know if these are a substance or a mixture and if they are homogeneous or heterogeneous:
chlorine
water
soil
sugar water
oxygen
carbon dioxide
rocky road ice cream
alcohol
pure air
iron
for example:
chlorine;substance;element
thanks and do it asap please?!?!?
To avoid semantics, let's define homogeneous as having the same composition throughout...if you take large or small samples at random, each will be the same.
chlorine: element, homogeneous
water: compound, homogeneous if pure.
soil: mixture, heterogeneous.
sugar water: mixture, homogeneous.
oxygen: element, homogeneous.
carbon dioxide: compound, homogeneous.
RRIC: mixture, heterogeneous.
alcohol: compound, homogeneous.
pure air: mixture (of gases), more or less homogeneous...but some samples will contain varying amounts of CO2, H2O, etc, which will still be 'pure' air...so perhaps heterogeneous is more apt.
iron: element, homogeneous...unless you want to differentiate the various crystal forms which may be present.
So there may be some ambiguity in the homogeniety of pure air and iron...depends upon the scale of your sampling.
(elements and compounds are 'substances')
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