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PRE-LAB QUESTIONS1.Draw an electron dot diagram for methane.2.Use Figure 9 and the periodic table (Figure 2) to construct a hypothesis about the melting points of stearic acid and sodium chloride. How will they compare, and how doesthat relate to the bonds that hold atoms in the compounds together?Figure 9: Structure of Stearic AcidBecause of the statement that more that bonds are complex, the easier they are to break apart. The stearic acid will break apart easier while the sodium chloride has the simpler bonds and will therefore take longer to melt.Chemical Bonding
EXPERIMENT 1: STRUCTURAL MODELSData SheetTable 1: Structural Models DataAtomNumber of ValenceElectronsHydrogen1Chlorine7Sodium1Oxygen6Magnesium2Potassium1Bromine7Fluorine7Table 2: Compound Models DataCompoundType of BondHClCovalentNaClIonicKBrIonicMgOIonicH2CovalentO2CovalentHFCovalent Post-Lab Questions1.Describe the differences between covalent and ionic bonds.