The following measurements when determining the specificity of a copper cube. Copper has an actual specific heat value of 0.385 J/g C. Trial 1 Trial 2 Trial 3
0.382 J/g C 0.365 J/g C 0.403 J/g C
Use the average of the three trials as the “measured value” and determine the numerical value for the percent error.

For a collision to be successful you need 2 different objects 

Van der waals forces are temporary electromagnetic forces established between uncharged atoms. some neutral molecules, when close together, can become temporarily “charged,” as electrons move around the atom. water is a polar molecule, the side of the molecule that the hydrogens bond to being more positive, and the opposite side bound to the lone pairs of electrons being more negative. this means that it participates in dipole-dipole interaction (non-polar exhibits dispersion forces), and it has the capacity for hydrogen bonding.