Classify the following materials as homogeneous mixtures and heterogeneous mixtures:

Soda-water, Wood, Air, Soil, Vinegar, Alcohol and water mixture, Petrol and water mixture, Chalk and water mixture, Sugar and water mixture, Copper sulphate solution.

Homogeneous mixture- Alcohol and water mixture, Sugar and water mixture,

Heterogeneous mixture- Chalk and water mixture,


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