A. Water expands when solidifying
B. Water becomes heavier
C. Ice becomes denser
D. Molecules compress closer
- Water expands when it freezes because its molecules form a special crystal structure called ice, which takes up more space than liquid water.
- This unusual property makes ice less dense than liquid water, allowing it to float on lakes and rivers, helping aquatic life survive in winter.
- The expansion can cause pipes to burst and rocks to crack during freezing, showing how important this feature is in nature and daily life.
🧠 Explanation:
When water freezes, its volume increases because it expands upon solidifying, forming a less dense ice structure. Water’s unique hydrogen-bonded lattice in ice is less compact than in liquid form, causing a 9% volume increase. This property, studied in physics and chemistry, explains why ice floats and pipes burst in cold weather. Understanding water’s expansion is key in environmental science, engineering, and climate studies, highlighting its impact on natural systems and infrastructure design for cold environments.
