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What always makes a mixture different from a pure substance?
AIt holds only one kind of particle
BIt holds no particles of any kind
CIt holds more than one kind of particle
DIt holds particles of a fixed size
Answer & Solution
Correct answer: C. It holds more than one kind of particle
1. A pure substance has the same kind of particle all the way through.
2. Elements and compounds both fit that description, so both are pure substances.
3. A mixture always carries more than one kind of particle.
4. Because nothing is bonded in a mixture, its parts can be separated physically.
_Source: Siyavula Natural Sciences Grade 8 (CC BY 4.0), Mixtures of elements and compounds_