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Chapter 11

Chapter 11. Physics A First Course. Energy and Change. Energy and Change Changes in Matter. 11.1 Chemical Bonds 11.2 Chemical Reactions 11.3 Nuclear Reactions. Explain why most atoms combine with other atoms to make compounds. Predict whether a chemical bond is ionic or covalent.

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Chapter 11

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  1. Chapter 11 Physics A First Course Energy and Change

  2. Energy and ChangeChanges in Matter • 11.1 Chemical Bonds • 11.2 Chemical Reactions • 11.3 Nuclear Reactions

  3. Explain why most atoms combine with other atoms to make compounds. Predict whether a chemical bond is ionic or covalent. Describe the difference between ionic and covalent bonds. Chapter 11.1 Objectives and Vocabulary • ionic bond • covalent bond • ion

  4. Ionic and Covalent Bonds

  5. Key Question: How do chemical changes involve energy? 11A Investigation: Energy and Chemical Changes *Students read text section 11.2 AFTER Investigation 11A

  6. 11A Investigation Topics • Measure materials. • Observe chemical reactions. • Measure temperature changes. • Compare exothermic and endothermic reactions. • Graph temperature vs. time for reactions.

  7. Instant Cold Packs NH4NO3+H2O+energy->NH4+ (aq)+ NO3- (aq) Snow Melt CaCl2+H2O ->Ca2+(aq)+Cl- (aq)+energy

  8. chemical reaction reactant product chemical equation activation energy exothermic endothermic photosynthesis respiration Recognize the signs of chemical change. Explain how energy is used or released by chemical reactions. Write an equation for a chemical reaction. Chapter 11.2 Objectives and Vocabulary

  9. Key Question: How do nuclear changes involve energy? 11B Investigation: Nuclear Reactions and Radioactivity *Students read text section 11.3 AFTER Investigation 11B

  10. 11B Investigation Topics • Perform model radioactive decay experiment. • Graph amount of matter vs. trial. • Compare decay experiment to nuclear reactions and atom structure. • Build model atoms. • Predict half-life of radioactive materials.

  11. nuclear reaction chain reaction radioactive radioactive decay alpha decay beta decay gamma decay half-life Compare and contrast nuclear reactions and chemical reactions. Explain the difference between fusion and fission reactions. Describe what is happening in radioactive decay. Chapter 11.3 Objectives and Vocabulary

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