EVERYDAY SCIENCE

Detailed explanation-1: -Freezing is the process that causes a substance to change from a liquid to a solid. Freezing occurs when the molecules of a liquid slow down enough that their attractions cause them to arrange themselves into fixed positions as a solid.

Detailed explanation-2: -The change from the liquid state to the solid state is called freezing. As the liquid cools, it loses thermal energy. As a result, its particles slow down and come closer together. Attractive forces begin to trap particles, and the crystals of a solid begin to form.

Detailed explanation-3: -As the liquid cools down, the amount of potential energy is reduced and the molecules start to move slower. When the water temperature reaches around 0°C, the molecules stick together and form a solid – ice. Even in this solid stage, the molecules are still moving – we just can’t see it.

Detailed explanation-4: -Food freezing in the fridge can be triggered by a handful of causes, including everything from a faulty temperature sensor to blocked air vents, a leaky door seal and more.

Detailed explanation-5: -In this practical, students observe what happens when a bottle is filled with water and allowed to freeze. The water expands as it freezes, which breaks the bottle. This is useful when teaching about the weathering of rocks and freeze-thaw.