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.
Colloid is a uniform dispersion of fine solid particles in a liquid medium. An emulsion is a uniform dispersion of one liquid in another liquid which are not miscible. Jul 19, 2013 Â·. A colloid is a heterogeneous mixture composed of two or more particles whose sizes range within 1 to 1000 nm in diameter.