EXPERIMENT 1: DENSITY OF A SUBSTANCE Data Sheet Table1: Isopropyl Alcohol Data Measurement Result Mass of 10 mL graduated cylinder (g): 33.5g Volume of alcohol added to graduated cylinder (mL): 10ml Mass of graduated cylinder and alcohol (g): 40.3g Mass of alcohol (g): 6.8g Calculated density of alcohol (g/cm3): Actual density of isopropyl alcohol: 0.790 g/cm3 Experimental error (use equation below):

intermolecular forces are the forces between molecules or particles.

there are two kinds of van der waals forces: weak london dispersion forces and stronger dipole-dipole forces.

in molecule of water there are dipole-dipole forces between negatively charged oxygen from one molecule of water and positively charger hydrogen of another molecule of water.

hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (h), covalently bound to a highly electronegative atom such as flourine (f), oxygen (o) and nitrogen (n) atoms.