1. MATTER NOW LETS DISCOVER MATTER AS MIXTURES THUS FAR WE HAVE REVIEWED MATTER AS PURE SUBSTANCES. PURE SUBSTANCE ELEMENT COMPOUND Carbon (C) H 2 O MIXTURE ?
2. Classification Matter Has mass and takes up space Mixture Variable Composition Substance Define composition Compound Two or more kinds of atoms Element One kind of atom Heterogeneous Unevenly mixed Homogeneous Evenly mixed
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4. Classifying mixtures The two types of Mixtures : 2) HETEROGENEOUS 1) HOMOGENEOUS Homogeneous Evenly mixed Heterogeneous Unevenly mixed Mixture is formed by two or more elements or compounds that are physically mixed together but not chemically joined. example: salt and pepper
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8. Mixtures Summary Heterogeneous Mixture (Suspension) Homogeneous Mixture (Solution) Not evenly mixed Evenly mixed Individual components retain their own properties Properties of combined components are usually different than those of each component Individual components can be easily seen Individual components can not be easily seen Can be easily separated Not as easily separated Ex.: salt & pepper mix, rocks, cereal, bag of assorted candy Ex. salt-water solution, tea, kool-Aid drink
11. Classifying Matter Matter Pure Substances Mixtures Elements Compounds Homogeneous Heterogeneous He, O H 2 O, NaCl Tea, kool-aid Rocky Road ice cream, muddy water Review: How matter is classified
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13. Classify the following substances as: Pure substance, heterogeneous mixture, or homogeneous mixture Return to index More review Gatorade Homogenous mixture Fruit Loops Heterogeneous mixture Pure substance Gasoline Dirt Heterogeneous mixture Sugar Crystals Pure Substance Air Homogeneous mixture Granite Heterogeneous mixture