Blood: This is a mixture because it contains different components such as plasma, red blood cells, white blood cells, and platelets. Plasma itself is made up of water, salts, proteins, and nutrients, showing that it is not a pure substance.
Common salt (NaCl): A pure chemical compound with a fixed ratio of sodium and chlorine atoms.
Sand: Mostly silicon dioxide (SiO₂). Although natural sand may contain impurities, it is generally considered a single substance, not a deliberate mixture.
Washing soda (Na₂CO₃·10H₂O): A pure compound with a definite chemical formula, not a mixture.
Therefore, the example of a mixture is Blood.
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