Classify each of the following as a pure substance or a mixture:
Drag the appropriate items to their respective bins.
a road treatment (CaCl,)
a copper (Cu) pipe
a soft drink
propane (C, Hg)
A sandwich
pure substance: copper (Cu) pipe
mixture: road treatment (CaCl), soft drink, propane (C, Hg)
uncertain: A sandwich (depends on the ingredients)
a road treatment (CaCl,) - pure substance
a copper (Cu) pipe - pure substance
a soft drink - mixture
propane (C, Hg) - pure substance
A sandwich - mixture