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Unformatted text preview: 10.Explain why strong covalent bonds and weak bonds are both essential in living organisms. 11.Distinguish between hydrogen bonds and van der Waals interactions. 12. Give an example that illustrates how a molecules shape can determine its biological function. 13.Explain what is meant by a chemical equilibrium. List of terms for chapter 2 Matter Atom Elements Compounds Essential elements (Which four of these make up 96% of living matter?) Trace elements Subatomic particles Neutrons Protons Electrons Atomic Number Mass Number Atomic Weight Isotope Energy Potential energy Valence electrons Electron orbitals Valence electrons Covalent bond Single bond Double bond Molecule Electronegativity Nonpolar covalent bond Polar covalent bond Ions Ionic Bonds Anion Cation Hydrogen bond Van der Waals interactions Chemical reaction Reactants Products Chemical equilibrium...
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- Spring '09