Three types of contamination are: or. 1  Microbial Contamination. 2  Cross Contamination. 3  Partical Contamination. 4  Contamination-this is when food contains a forgien object. 5  Cross Contamination-this is when harmful bacteria or virus are passed from one food to another.hree types of contamination are: or. 1  Microbial Contamination. 2  Cross Contamination. 3  Partical Contamination. 4  Contamination-this is when food contains a forgien object. 5  Cross Contamination-this is when harmful bacteria or virus are passed from one food to another.
The freezing point of the solvent in a solution changes as the concentration of the solute in the solution changes (but it does not depend on the identity of either the solvent or the solute(s) particles (kind, size or charge) in the solution). Non-Volatile Solutes. The freezing point of the solvent in a solution will be less than the freezing point of the pure solvent whether the solution contains a non-volatile solute or a volatile solute. However, for simplicity, only non-volatile solutes will be considered here.
Temperature Effects on Phase. If pressure is constant, the state of a substance will depend entirely on the temperature it is exposed to. For this reason, ice melts if taken out of a freezer and water boils out of a pot if left at too high a temperature for too long.he point at which matter subjected to a particular temperature under conditions of constant pressure begins to change its phase is called the phase change threshold. At this temperature, every bit of the substance exposed to the heat will change its state.