In Celsius it's 0 degrees and in Fahrenheit it's 32 degrees.
Tap water would freeze faster but salt water would allow the waters freezing point to be lowered.
Zero Celsius is the freezing point of water.
Tap water freezes below zero degrees Celsius due to impurities and dissolved substances that lower its freezing point. These impurities act as "anti-freeze" agents, preventing the water from solidifying at 0 degrees Celsius. This phenomenon is known as freezing point depression.
the salt lowers the freezing point.
In scholastic provisions yes. In reality, no. the elements in tap water would most likely increase the boiling point, but it would be very insignificant.
Assuming there are equal concentrations of salt and sugar in each sample, the sugar water will freeze faster. Salt dissociates into its ions when dissolved, giving two ions for ever salt molecule. Because freezing point depression depends only on concentration, and the concentration of ions is double that of the sugar, sugar will freeze faster.
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 in a water solution will LOWER the Freezing Point of the resultant solution. Therefore the Saltwater will have to be cooled to a lower temperature. All other things being equal, that should take longer than the plain tap water.
The difference in temperature is not significant; for an impure water the freezing point is lower.
Pure water has a freezing temperature of 0 degrees and a boiling temperature of 100 degrees, unlike tap water which has impurities that can alter it's freezing and boiling point
Distilled water freezes first. This is because the presence of impurities in water lowers the freezing point of water and since tap water reasonably contains impurities, it will have a lower freezing point, that is it will freeze at a temperature less than 0oC. On the other hand, distilled water does not contain impurities and freezes at 0oC.
Pepper water does not freeze faster than tap water. The freezing point of water is 0 degrees Celsius, regardless of whether it contains pepper or not. The presence of pepper may affect the appearance of the ice crystals that form as the water freezes, but it does not impact the rate of freezing.