Freezing is the process where a liquid turns into a solid when it gets very cold. For example, when water reaches 0 degrees Celsius (32 degrees Fahrenheit), it transforms into ice. This happens because the molecules in the water slow down and stick together, forming a solid structure. In everyday life, we often use freezing to preserve food. When we put leftovers in the freezer, the low temperature slows down the growth of bacteria, keeping the food safe to eat for a longer time. This is why we can enjoy frozen vegetables or ice cream even weeks after buying them!