Substance, It is a type of Matter with a fixed composition, Compound, It is a substance in which the atoms of two or more elements are chemically combined in a fixed proportion, Element, It is a substance made up of atoms that are all alike, Suspension, It is a heterogeneous mixture made of a liquid and solid particles that settle, Solution, It is a constantly and uniformly mixed mixture with particles so small that they cannot be seen with a microscope (Same as Homogeneous Mixture), Colloid, It is a heterogeneous mixture with particles never settle, Homogeneous Mixture, It is a constantly and uniformly mixed mixture with particles so small that they cannot be seen with a microscope, Heterogeneous Mixture, It is a mixture in which different materials remain distinct, Tyndall Effect, The scattering of a light beam as it passes through a colloid.

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