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Classifying Matter

Classifying Matter. Classifying Matter. Matter. Pure Substances. Mixtures. Homogeneous. Heterogeneous. Elements. Compounds. Rocky Road ice cream, muddy water. milk, tea. Fe, O. H 2 O, CO 2. Pure Substances.

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Classifying Matter

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  1. Classifying Matter

  2. Classifying Matter Matter Pure Substances Mixtures Homogeneous Heterogeneous Elements Compounds Rocky Road ice cream, muddy water milk, tea Fe, O H2O, CO2

  3. Pure Substances • Substances which have unique, identifying properties are called pure substances. • There are two types of pure substances: Elements Compounds

  4. What is the difference between anelement and a compound? • Element • An element is a pure substance which is composed of only one type of atom. • All of the elements are listed on the periodic table. • Compound • A compound is a pure substance which is composed of more than one type of element. • All compounds are molecules, but not all molecules are compounds. (example – O2, H2)

  5. What are some examples ofelements and compounds? Some examples of elements include • oxygen (O), carbon (C), iron (Fe), • gold(Au), and fluorine (F). Some examples of compounds include • water (H2O), sugar (C12H22O11), • rust(Fe2O3), and salt (NaCl).

  6. Classifying Matter Matter Pure Substances Mixtures Homogeneous Heterogeneous Elements Compounds Rocky Road ice cream, muddy water milk, tea Fe, O H2O, CO2

  7. Mixtures

  8. A mixture is a combination of two or more substances where there is no chemical combination or reaction.

  9. Mixtures combine physically in no specific proportions. They just mix. Mixtures do not have a definitecomposition.– You can have sweet tea that has a lot ofsugar or sweet tea with less sugar.

  10. When you create a mixture, there are no new substances formed. Each part of a mixture keeps its own properties.

  11. Mixtures can be heterogeneous or homogeneous.

  12. Classifying Matter Matter Pure Substances Mixtures Homogeneous Heterogeneous Elements Compounds Rocky Road ice cream, muddy water milk, tea Fe, O H2O, CO2

  13. Heterogeneous mixtures are those where the substances are not distributed evenly. They usually involve a mixture of a solid in a solid. A mixture of stones in soil is an example of a heterogeneous mixture.

  14. Heterogeneous Mixtures: • salsa • water with ice cubes in it • chicken noodle soup

  15. Homogeneous mixtures are those where the materials are evenly distributed throughout. Homogenized milk is an example.

  16. Homogeneous Mixtures: • salty water (where the salt is completely dissolved) • brewed tea or coffee • soapy water • wine

  17. You can separate a simple mixture by physical means. No chemical reaction is needed.

  18. TEST OUR KNOWLEDGE Answers ACD AD C EF H G B

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