Plain Tap water would freeze fastest.
Adding salt or sugar to tap water will cause a depression/decrease in freezing point. Hence it will be harder to freeze the tap salt or sugar water.
salt water
i think tap water will freeze the fastest
plain water Salt lowers the freezing point of water.
i did the research on for a science project and sugar water freezes fastest
Fresh, pure water
Cold water, being the closest to freezing point, will obviously freeze the fastest. Hot water will freeze the second fastest, and salt water barely ever freezes, except in very cold conditions.
Regular water. Salt lowers the freezing point of water, making it harder to freeze. That's why salt is used as a de-icer on icy or snowy roads.
'Faster' is NOT the correct word. Pure water freezes at a higher temperature , than salt water, BUT no FASTER.
Sugar water will freeze faster. Salt lowers the temperature at which water freezes. That is why they put salt on the roads and on sidewalks in snowy areas. Sugar in water should have little to no affect on the rate of freezing.
Salt lowers the freezing point of water, meaning it needs to be colder for the salt water to freeze compared to pure water. The salt itself does not freeze because its freezing temperature is much lower than that of the salt water solution.
If the salt is still in the water it will freeze inside the water so its technically frozen
It is NOT a case of 'longer' or 'quicker'. Salt water freezes at a LOWER temperature than pure de-ionised (distilled) water. The freezing point of pure de-ionised (distilled) water. is 0 oC salt water is ' -6 0C '. How long or quick it takes to go from 0 oC to -6 oC is a matter of time and the ambient temperature. NB There is a whole lot of physical chemistry devoted to the depression of freezing points Cryoscopic Constants. Conversely there is a whole lot of physical chemistry devoted to the elevation of boiling points Ebullioscopic Constants. pure water boils at 100 0C salt water boils at 102 oC (depending on conc'n of salt). The above temperatures refer only to water at standard temperature and pressure (STP).