A chef makes a marinade by mixing red pepper flakes, dried onion flakes, and ground ginger with soy sauce. He sets the marinade on the counter for a few minutes. When he returns, he must stir the marinade because the spices have settled to the bottom of the container.This mixture is a .

A suspension contains particles large enough to settle out when left undisturbed. Here, the spice flakes settle to the bottom, so the marinade must be stirred to redistribute them. A colloid’s particles generally do not settle out, and a solution has substances dissolved evenly throughout.

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