1. 2.2 Mixtures > 1 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. Chapter 2 Matter and Change 2.1 Properties of Matter 2.2 Mixtures 2.3 Elements and Compounds 2.4 Chemical Reactions

2. 2.2 Mixtures > 2 Matter Classification Matter Substance Mixture Element Compound Homogeneous Heterogeneous MixtureMixture

3. 2.2 Mixtures > 3 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. Describing Matter Element : simplest form of matter that has a unique set of properties Examples: Oxygen Hydrogen Carbon

4. 2.3 Elements and Compounds > 4 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. The Periodic Table—A Preview

5. 2.3 Elements and Compounds > 5 Symbols and Latin Names for Some Elements NameSymbolLatin name SodiumNanatrium PotassiumKkalium AntimonySbstibium CopperCucuprum GoldAuaurum SilverAgargentum IronFeferrum LeadPbplumbum TinSnstannum

6. 2.2 Mixtures > 6 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. Describing Matter Compound : substance that contains 2 or more elements chemically combined in a fixed proportion. Examples: Water, H 2 O Sucrose, C 12 H 22 O 11 Carbon Dioxide, CO 2

7. 2.3 Elements and Compounds > 7 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. There is a key difference between elements Chemical Formulas Used by chemists to represent compounds Subscripts tell you how many of each type of element are in the compound Examples: Table Salt: NaCl Ammonia: NH 3 Distinguishing Elements and Compounds

8. 2.3 Elements and Compounds > 8 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. There is a key difference between elements and compounds. Compounds can be broken down into simpler substances by chemical means, but elements cannot. Distinguishing Elements and Compounds

9. 2.2 Mixtures > 9 Matter Classification Matter Substance Mixture Element Compound Homogeneous Heterogeneous MixtureMixture

10. 2.2 Mixtures > 10 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. Describing Matter Mixture: a physical blend of two or more substances that are not chemically combined

11. 2.2 Mixtures > 11 Describing Matter Heterogeneous Mixture Composition is NOT uniform throughout Examples: Salad Chocolate Chip Cookie Chicken Noodle Soup Homogeneous Mixture Composition is uniform throughout Also called a solution. Examples: AirSteel VinegarSalt Water Milk Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved..

12. 2.2 Mixtures > 12 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. Separating Mixtures Differences in physical properties can be used to separate mixtures. Examples: Filtration Distillation Magnetism

13. 2.2 Mixtures > 13 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. Filtration Separating Mixtures Separates solids from a liquid in a heterogeneous mixture.

14. 2.2 Mixtures > 14 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. Distillation Separating Mixtures Process which separates mixtures of liquids with different boiling points.

15. 2.2 Mixtures > 15 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. END OF 2.2