Performing the Chemical Test by Reagent Strip The urine must be collected using appropriate technique and be tested within one hour ofcollection. If tests cannot be performed within this time, the specimen may be refrigerated for upto 8 hours.
Elastic and Inelastic Collisions. A perfectly elastic collision is defined as one in which there is no loss of kinetic energy in the collision. An inelastic collision is one in which part of the kinetic energy is changed to some other form of energy in the collision. Any macroscopic collision between objects will convert some of the kinetic energy into internal energy and other forms of energy, so no large scale impacts are perfectly elastic.
This means that the bonds such as hydrogen bonds and polar attrac â¦ tion between the individual molecules of a substance must be broken so that the molecules can flow past each other in a liquid state. Diamonds have a very high melting point. This is because diamond is a macromolecule.Diamond is made up of single carbon bonds, with four carbons attached to each carbon molecule. In contrast, molecules such as water and carbon dioxide have a set number of atoms per molecule, and that number is very low.his means that the bonds such as hydrogen bonds and polar attrac â¦ tion between the individual molecules of a substance must be broken so that the molecules can flow past each other in a liquid state. Diamonds have a very high melting point. This is because diamond is a macromolecule.