A pure substance is made of one type of element or compound and a mixture is made up of two or more pure substances. Water is a compound but it is classified as a homogeneous mixture but it is not a mixture. I don't understand can I please have an explanation? Why can a homogeneous mixture be a pure substance or a mixture, when a pure substance is not a mixture?

Explanation:homogeneous mixtures may be considered examples of pure substances. Examples of homogeneous mixtures include vegetable oil, honey, and air. While these substances contain multiple types of molecules, their composition is consistent throughout a sample. "This is how its considered pure "

Mixtures, on the other hand, are considered impure substances. A mixture is created when substances combine but no chemical reaction occurs. In general, a mixture can be separated into its original components, while a pure compound cannot

"This is how its considered as not pure"

the food using pesticides in the future will harm you by giving you diseases like cancer or something since they have things that we should not eat in it like chemicals or pesticides. that is why organic food is more expensive because they take the time to make it right and healthy for you to eat.

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