Lab 8.2

The more viscous oils are the ones that have a higher total number of carbons, which results as well in a higher total number of hydrogen atoms. This is because the the higher viscosity is directly related to the attractions of the molecules. In the lab we came to the conclusion that the higher the boiling point was of an element, the stronger the intermolecular attractions were as well. The larger the the molecules are the stronger the intermolecular attractions are.




Viscosity decreases with boiling point. This means that the liquid less likely to resist flow will have a lower boiling point. This is because of a weaker intermolecular attraction. In the lab, the Torch fuel has a density of 5.7 grams per milliliter, and motor oil has a density of 8 grams per ml. This shows that motor oil has a larger molar mass, and a graph shows us that it takes more energy to boil the torch fuel.