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A pure substance is a single kind of matter. ----------------------- A(n) is made up of two or more substances that are together in the same place, but each substance keeps its own properties.
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A pure substance is a single kind of matter. ----------------------- A(n)

is made up of two or more substances that are together in the same place, but each substance keeps its own properties.

User Sanjay Salunkhe
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Answer: 21 i hope this helps:)
User Oren Kishon
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