Question

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

Answer 1

Answer: C.

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

Explanation:

A heterogeneous mixture is colloidal if

• Particles cannot be seen with a naked eye.
• Particles can pass through filter paper
• It doesn't undergo sedimentation.

A heterogeneous mixture is suspension if

• Particles can be seen with a naked eye.
• Particles cannot pass through filter paper
• It undergoes sedimentation.

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".

Answer 2

the correct answer is “c”