Gr7_Mixtures_unit3_ch7

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Terms in this set (8)

anything that takes up space and has mass

Pure substances

made up of only one type of particle and therefore look the same all throughout

Pure substance examples

include, gold, copper, iron, oxygen, distilled water, alcohol, carbon dioxide, sugar, salt and baking soda

contains two or more substances and therefore two or more different kinds of particles

may be either homogeneous or heterogeneous

Homogeneous mixtures

These are often called solutions and have the same properties throughout (usually transparent, appear to have only one visible part, and do not settle)

Heterogeneous mixtures (mechanical mixtures)

These are often called mechanical mixtures and have different visible parts with different properties (often involve settling, and are not transparent throughout)

This can be used to help distinguish between a solution and a mixture. A solution does not scatter light so you will not see the beam of light and mixtures tend to scatter the beam of light so you can see the beam.