What is the difference between heterogeneous and homogeneous? How can you tell them apart? (by sight)
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That is just how I always remembered it.
Homogeneous are mixtures that have definite, true composition and properties. For example, any amount of a given mixture has the same composition and properties. Examples are solutions and some alloys (but not all). Homogeneous mixtures can also be called "impure substances." A homogeneous mixture is a uniform mixture consisting of only one componet. Examples are gasoline and margarine.
Heterogeneous mixtures are mixtures without definite composition, for example, granite. Salad is a typical example of this kind of mixture. Heterogeneous mixtures are said to have several phases (not to be confused with phases of matter). An example is the parts of a heterogeneous composition, which can be mechanically separated from the rest. Examples include: salad, trail mix, milk (before homogenization).
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