1 / 15

Chapter 6: The Structure of Matter

Chapter 6: The Structure of Matter. Section 1: Compounds and Molecules. Key Ideas. What holds a compound together ? How can the structure of chemicals compounds be shown ? What determines the properties of a compound ?. Key Terms. Chemical bonds Chemical structure

brilliant
Download Presentation

Chapter 6: The Structure of Matter

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 6: TheStructure of Matter

  2. Section 1: Compounds and Molecules

  3. Key Ideas • Whatholds a compoundtogether? • How can thestructure of chemicalscompoundsbeshown? • What determines theproperties of a compound?

  4. Key Terms • Chemicalbonds • Chemicalstructure • Bond length • Bond angle

  5. Chemical Bonds • Theforcesthatholdatomsorionstogether in a compound are calledchemicalbonds

  6. ChemicalStructure • Chemicalstructureisthewaythecompound’satoms are bondedtomakecompound • Just as thestructure of buildings can berepresentedbyblueprints, thestructure of chemicalcompounds can beshownbyvariousmodels

  7. ChemicalStructure • Ball-and-stickmodel • Represents bond lengths and angles • Bond lengthisthedistancebetweenthenuclei of twobondedatoms • Bond angleistheangleformedbytwobondstothesameatom, tellswhichwaytheseatomspoint.

  8. ChemicalStructure • Ball-and-stickmodel

  9. ChemicalStructure • Space-fillingmodels • Thismodel shows thespacethatatomstake up

  10. ChemicalStructure • Bonds can bend, stretch, and rotatewithoutbreaking

  11. HowDoesStructureAffectProperties? • Thechemicalstructure of a compound determines theproperties of thatcompound • Compoundswithnetworkstructures are strongsolidslikequartz, made of silicondioxide, SiO2

  12. HowDoesStructureAffectProperties? • Thechemicalstructure of a compound determines theproperties of thatcompound • Somenetworks are made of bondedionsliketablesalt (sodiumchloride), that are foundin theform of regularlyshapedcrystals

  13. HowDoesStructureAffectProperties? • Thechemicalstructure of a compound determines theproperties of thatcompound • Somecompounds are made of moleculeslikesugar (C12H22O11), thatismade of carbon, hydrogen, and oxygenatomsthat are joinedbybonds

  14. HowDoesStructureAffectProperties? • The strength of attractions between molecules varies

  15. Homework • Classify the following substances as mixtures or compounds: air, CO, SnF2, pure water. • Draw a ball-and-stick model of boron trifluoride, BF3, molecule. In this molecule, a boron atom is attached to three fluorine atoms. Each F-B-F bond angle is 120o, and all B-F bonds are the same length. • Explain why glass, which is made of mostly SiO2, is often used to make cookware.

More Related