Biology mixture

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 ?

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

Solution Process ,[object Object],[object Object],[object Object],[object Object],[object Object],Homogeneous Evenly mixed Heterogeneous Unevenly mixed

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

The Two Types of Mixture ,[object Object],[object Object],[object Object],Solvent is the substance in which the solute is dissolved Solute is the substance dissolved in the solution . When sugar, a solute and water a solvent are mixed, a water sugar solution is formed.

[object Object],[object Object],The Two Types of Mixture (Cont.)

[object Object],[object Object],[object Object]

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

Solubility ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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

[object Object],[object Object],[object Object],[object Object],[object Object],Practice Problems 1. He 2. Ho 3. Ho 4. He 5. He 6. Ho 7. He 8. He 9. He 10. Ho 6. Tea 7. Banana nut bread 8. Pizza 9. Blood 10. Brass Determine whether each is a heterogeneous or homogeneous mixture: Answers: Return to index

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

[object Object],[object Object],[object Object],[object Object],[object Object],REVIEW 1. matter, changes 2. mass, space 3. atoms 4. pure substance, mixture 5. elements, compounds Return to index Answers:

MATTER AS MIXTURES ,[object Object],HOW ARE MIXTURES DIFFERENT FROM COMPOUNDS? HOW ARE MIXTURES LIKE COMPOUNDS? THEY ARE MADE FROM TWO OR MORE SUBSTANCES MIXTURES DO NOT FORM CHEMICAL BONDS.

HOMOGENEOUS … a mixture that is the same throughout. A homogeneous mixture has a composition and properties that are identical regardless of the sample Ways to identify a homogeneous mixture: A SOLUTION is another name for a homogeneous mixture is ,[object Object],[object Object],[object Object],[object Object]

HETEROGENEOUS … a mixture that is visibly different throughout. Heterogenous mixtures have a composition and properties that differ in any given sample. is Ways to identify a homogeneous mixture: ,[object Object],[object Object],[object Object],[object Object]

HETEROGENEOUS MIXTURES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Now, lets put it all together and determine how to tell substances (compounds and elements) from mixtures .

Elements, Compounds, and Mixtures Two of the descriptions to the right apply to each bottle below. Determine the appropriate descriptions . ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],2_______ 1_______ 3_______ 4_______ d & h b & g c & e a & f Return to Index hydrogen atoms oxygen atoms hydrogen atoms

Biology mixture

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