Prep the perimeter. Hand-sand or palm-sand the perimeter of the floor with coarse 180-grit sandpaper. Rub out 4 to 6 inches (10.2 to 15.2 cm) from the edge of the baseboard so that you're sure to cover the areas your mechanical floor sander can't get to. To make a wood paste, mix sawdust with a small amount of white glue to create a paste. 2  Apply paste over the nails with a putty knife and allow to harden before sanding flush with the rest of the floor.
How is an endothermic phase change different from an exothermic phase change? An endothermic phase change is when the substance absorbs energy from its surroundings (melting, vaporization). In an exothermic phase change the substance releases energy tâ¦o its surroundings (freezing, condensation).. 10 people found this useful. Norvellwisdom. 12,735 Contributions.
Exothermic and endothermic reactions both cause some type of energy level differences. In an exothermic reaction, energy is released in the form of heat. As chemical bonds are formed, energy is released. An example is water turning into ice. Chemical bonds form and release energy to create ice crystals. An endothermic reaction, however, is the opposite. Here, the energy is absorbed in the form of heat. When a chemical bond is broken, the energy used creates an endothermic reaction. Changing ice into water, then vapor, requires the chemical bonds to be broken.