Sec 2 Physical Properties -Solubility:hydrophobic -Density:less than 1 g/mL -Boiling points increase with increasing carbons (little less for branched chains). -Melting points increase with increasing carbons(less for odd-number of carbons).Sec 2 Physical Properties ▪Solubility: hydrophobic ▪Density: less than 1 g/mL ▪Boiling points increase with increasing carbons (little less for branched chains). ▪Melting points increase with increasing carbons (less for odd-number of carbons)