Why Are Ice Cubes Cloudy on the Inside

clear liquid water should freeze as a clear solid, but ice cubes commonly have a cloudy appearance. What chemistry should you know to recognize that cloudy ice cubes are not cause for serious alarm  

The depression of the freezing point of a solvent due to the presence of a dissolved solute is an example of a colligative property, that is, a property of a dilute solution that depends on the number of dissolved particles and not on the identity of the particles. Water has a freezing point depression constant, Kf, of 1.86 K kg mol-1. In other words, for every mole of nonvolatile solute dissolved in a kilogram of water, the freezing point of water is lowered by 1.86°C. The change in freezing point, AT, can be calculated from the equation 

KEY TERMS freezing point depression molality colligative property solvent solute 

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