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A substance in which all atoms are the same.


a substance in which two or more elements are combined in a fixed proportion.

homogeneous mixture

contains two or more substances blended evenly throughout.

heterogeneous mixture

a mixture in which different materials can easily be distinguished.


a homogeneous mixture of particles too small to see with a microscope and too small to settle.

tyndall effect

the scattering of light by colloidal particles


heterogeneous mixture with large particles that never settle.


heterogeneous mixture containing a liquid in which visible particles settle


any material made of two or more substances that can be physically seperated

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