Classification of matter practice #3

Welcome to Classification of matter practice #3

Classify soy sauce as element, compound, homogeneous mixture or heterogeneous mixture.
Classify plain platinum ring as element, compound, homogeneous mixture or heterogeneous mixture.
Classify cooking oil as element, compound, homogeneous mixture or heterogeneous mixture.
Classify smoke as element, compound, homogeneous mixture or heterogeneous mixture.
Classify silver nitrate as element, compound, homogeneous mixture or heterogeneous mixture.
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