Which criteria are responsible for deciding whether a heterogeneous mixture is a colloid or a suspension? A.
whether its composition is uniform and transparent
B.
whether the particles remain suspended for an extended period of time
C.
whether it can be separated into simpler substances through physical separation techniques
D.
whether the ratio of components is fixed

C.

whether it can be separated into simpler substances through physical separation techniques

Explanation:

A heterogeneous mixture is colloidal if

A heterogeneous mixture is suspension if

So, the criteria are responsible for deciding whether a heterogeneous mixture is a colloid or a suspension is "whether it can be separated into simpler substances through physical separation techniques".

So, the correct answer is "c".

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