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THE CHEMICAL BASIS OF LIFE

THE CHEMICAL BASIS OF LIFE. THE CHEMICAL BASIS OF LIFE. EMERGENT PROPERTIES HYDROGEN AND OXYGEN INDIVIDUALLY VERSUS H 2 O. THE CHEMICAL BASIS OF LIFE. LIFE IS MADE UP OF 25 ELEMENTS WHAT IS AN ELEMENT? 92 NATURALLY OCCURING ELEMENTS 25 ARE NECESSARY FOR LIFE WHAT ARE THE MAJOR ELEMENTS?

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THE CHEMICAL BASIS OF LIFE

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  1. THE CHEMICAL BASIS OF LIFE

  2. THE CHEMICAL BASIS OF LIFE • EMERGENT PROPERTIES • HYDROGEN AND OXYGEN INDIVIDUALLY VERSUS H2O

  3. THE CHEMICAL BASIS OF LIFE • LIFE IS MADE UP OF 25 ELEMENTS • WHAT IS AN ELEMENT? • 92 NATURALLY OCCURING ELEMENTS • 25 ARE NECESSARY FOR LIFE • WHAT ARE THE MAJOR ELEMENTS? • WHAT ARE THE TRACE ELEMENTS?

  4. THE CHEMICAL BASIS OF LIFE • TRACE DOESN’T MEAN USELESS!!! • SAY HI TO A “GOITER”

  5. THE CHEMICAL BASIS OF LIFE • ELEMENTS CAN COMBINE TO FORM COMPOUNDS • HOW AND WHY DOES THIS OCCUR??

  6. THE CHEMICAL BASIS OF LIFE • ELEMENTS CAN COMBINE TO FORM COMPOUNDS • WHAT IS AN ATOM? • SUBATOMIC PARTICLES • PROTONS • NEUTRONS • ELECTRONS • WHAT DOES AN ATOM LOOK LIKE?

  7. THE CHEMICAL BASIS OF LIFE

  8. THE CHEMICAL BASIS OF LIFE • WHAT GIVES DIFFERENT ELEMENTS THEIR DIFFERENT PROPERTIES? • ATOMIC NUMBER • ATOMIC MASS • WHAT ARE ISOTOPES?

  9. THE CHEMICAL BASIS OF LIFE • RADIOACTIVE ISOTOPES CAN BE USEFUL IN RESEARCH AND MEDICAL DIAGNOSIS

  10. THE CHEMICAL BASIS OF LIFE • ELECTRON ARRANGEMENTS DETERMINE THE CHEMICAL PROPERTIES OF AN ATOM • ELECTRON SHELLS

  11. THE CHEMICAL BASIS OF LIFE • ELECTRON ARRANGEMENTS DETERMINE THE CHEMICAL PROPERTIES OF AN ATOM • VALENCE SHELLS

  12. THE CHEMICAL BASIS OF LIFE • ELECTRON ARRANGEMENTS DETERMINES THE CHEMICAL PROPERTIES OF ATOMS • WHAT IS A CHEMICAL BOND? • WHY DO THEY OCCUR?

  13. THE CHEMICAL BASIS OF LIFE • CHEMICAL BONDS • TYPES OF CHEMICAL BONDS? • VIDEOS

  14. THE CHEMICAL BASIS OF LIFE • IONIC BONDS VS IONS VS IONIC COMPOUNDS

  15. THE CHEMICAL BASIS OF LIFE • COVALENT BONDS

  16. THE CHEMICAL BASIS OF LIFE • COVALENT BOND

  17. THE CHEMICAL BASIS OF LIFE • COVALENT BONDS FORM MOLECULES • WHAT IS A MOLECULE? • COVALENT BONDS ALLOW MULTIPLE ELECTRONS TO BE SHARED AT THE SAME TIME RESULTING IN?? • DOUBLE BONDS • TRIPLE BONDS

  18. THE CHEMICAL BASIS OF LIFE • DOUBLE BONDS

  19. THE CHEMICAL BASIS OF LIFE • TRIPLE BONDS

  20. THE CHEMICAL BASIS OF LIFE • MOST IMPORTANT TYPE OF BOND??

  21. THE CHEMICAL BASIS OF LIFE • COVALENT BONDING DOESN’T NECESSARILY MEAN EQUAL SHARING!!! • POLAR VS NON-POLAR MOLECULES • ELECTRONEGATIVITY

  22. THE CHEMICAL BASIS OF LIFE • WATER IS THE MOST IMPORTANT POLAR MOLECULE • VIDEO

  23. THE CHEMICAL BASIS OF LIFE • WATER’S POLARITY LEADS TO HYDROGEN BONDING

  24. THE CHEMICAL BASIS OF LIFE • WATER’S POLARITY AND HYDROGEN BONDING GIVE WATER SOME UNIQUE PROPERTIES • COHESION • ADHESION • SURFACE TENSION • HEAT CAPACITY • DENSITY DILEMMA? • UNIVERSAL SOLVENT

  25. THE CHEMICAL BASIS OF LIFE • ACIDS AND BASES • PH SCALE • BUFFERS

  26. THE CHEMICAL BASIS OF LIFE • ACIDS VS BASES

  27. THE CHEMICAL BASIS OF LIFE • CHEMICAL REACTIONS REARRANGE MATTER • H2 + O2  H2O (REACTANT VS PRODUCT??) • C40H56 + O2 + 4H  2C20H30O (SUBSCRIPT VS COEFFICIENT??)

  28. THE CHEMICAL BASIS OF LIFE • MORE TO COME!!! TUNE IN NEXT WEEK, SAME BAT TIME, SAME BAT CHANNEL!!

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