The properties of a mixture are typically averages of the properties of its components. The properties of a compound may differ dramatically from the properties of the elements that combine to produce the compound. For each process described below, state whether the material being discussed is most likely a mixture or a compound, and state whether the process is a chemical change or a physical change.

a. An orange liquid is distilled, resulting in the collection of a yellow liquid and a red solid.

b. A colorless, crystalline solid is decomposed, yielding a pale yellow-green gas and a soft, shiny metal.

c. A cup of tea becomes sweeter as sugar is added to it.