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EQs: Explain the difference between inorganic & organic. Compare polar and nonpolar molecules and give an example of each.
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AtomsAtoms & Chemical Bonds Brainpops Chemical Bonds AtomsChemical Bonds
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The Molecules of Life
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Major Elements of Life Carbon (C) Hydrogen (H) Oxygen (O) Nitrogen (N) Phosphorous (P) Sulfur (S)
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Organic Molecules Must contain Carbon and Hydrogen Make up most components of living things Ex-Glucose (type of sugar)
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Macromolecules Combine with each other and other elements to form MACROMOLECULES: Carbohydrates, Lipids, Proteins and Nucleic AcidsCarbohydrates, Lipids, Proteins and Nucleic Acids
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Inorganic Molecules Does not contain both carbon and hydrogen non-living substances (can sometimes be found in living things) Examples: Water, Salt, Iron, Carbon Dioxide
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Water Chemical Formula: H 2 O Structure:
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Electrons are pulled more towards one side of a molecule than the other, resulting in a positive end (pole) and a negative end (pole). Example: Water, Sugar
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H2OH2O = Proton (p + ) = Neutron (n o ) = Electron (e - ) 8 protons! 1 proton Two Hydrogen atoms are held to one Oxygen by a weak covalent bond (sharing electrons)
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Oxygen’s 8 protons are so positive they pull the electrons away from Hydrogen! This results in the oxygen being very negatively charged! The hydrogens have a positive charge because of their proton ++ = Proton (p + ) = Neutron (n o ) = Electron (e - )
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NONPOLAR Molecules Non polar substances have equal charge distribution (neither end is more + or – than the other) Example: oil, CO 2
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Hydrogen Bond When water molecules are close together, the + of the H is attracted to the – of the O on another molecule This is called a hydrogen bond.
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Processing Cornell Notes pull out all essential vocabulary Are the 4 macromolecules organic or inorganic AND why?add this question next to its answer in the notes: Are the 4 macromolecules organic or inorganic AND why? come up with at least 2 more of your own (use critical thinking page to help!) Fill in the summary pyramid then write a 2- 3 sentence summary based on it
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Essential Questions 1.Explain the difference between inorganic & organic. 2.Compare polar and nonpolar molecules and give an example of each.
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