Question

oil and vinegar salad dressing is a heterogeneous mixture because its composition is not uniform throughout. (b) a commercial sports drink is a homogeneous mixture because its composition is uniform throughout.

1. how is a compound different from a mixture.
2. when is a mixture

homogeneous:
heterogeneous:

1. from the above diagram describe matter:

Explanation:

A compound is a pure - substance made of two or more different elements chemically combined in a fixed ratio. A mixture is a combination of two or more substances that are not chemically combined and can have variable composition. A mixture is homogeneous when its composition is uniform throughout, like a commercial sports drink. It is heterogeneous when its composition is not uniform, like oil and vinegar salad dressing. Matter can be classified as either a pure substance (which can be further divided into elements and compounds based on chemical divisibility) or a mixture (which can be classified as homogeneous or heterogeneous based on uniformity).

Answer:

1. A compound is a pure substance with elements chemically combined in a fixed ratio, while a mixture has substances not chemically combined and variable composition.
2. A mixture is homogeneous when its composition is uniform throughout and heterogeneous when its composition is not uniform throughout.
3. Matter can be classified as pure substances (elements or compounds with constant properties and composition) or mixtures (homogeneous if uniform, heterogeneous if not).