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When two substances that cannot dissolve each other are mixed, a
mixture is formed.

A heterogeneous mixture that has very small dispersed particles and stays mixed for a long time is a
.

A heterogeneous mixture that has larger dispersed particles that settle over time is a
.

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OnlyHiro

Answer:

The heterogeneous mixture that has very small dispersed particles and stays mixed for a long time is colloid. Because colloid has particles that are small enough to suspended but are as large that they can scatter light.

Answer:

1. heterogeneous

2. colloid

3. suspension