Classify the following as element, compound, homogeneous mixture, or heterogeneous mixture: methane


Elements – Elements constitute the simplest chemical substances in which all the atoms are exactly the same.

Compounds – Compounds are chemical substances made up of two or more elements that are chemically bound together in a fixed ratio.

Mixtures – In chemistry, when two or more substances mix with each other without participating in a chemical change, the resulting substance is called a Mixture.

Elements Compounds Mixture
Sodium Calcium carbonate Soil
Silver Carbon dioxide Sugar solution
Tin Methane Coal
Silicon   Air

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