Tenzing,+Sheila,+Latrell,+Ysabella.

When water comes into contact with salt, the salt's ions start to **dissociate**, or separate. The salt compound (NaCl) is separated into Na+ and Cl- **ions**. When the salt solute dissolves in water, it lowers the freezing point. The **freezing point depression** of the solution is a **colligative property.** This is where the dissolved solute lowers the freezing point of the solution. When ice undergoes a phase change from solid to liquid, it is an example of an **endothermic reaction**. An endothermic reaction is a chemical reaction in which heat is absorbed. When salt is added to the ice it melts it, making the ice cubes colder than before which freezes the ice cream ingredients.