A. 5%
B. 7%
C. 9%
D. 11%
🧠 Explanation:
When water freezes, it expands in volume by about 9%, forming ice with a less dense molecular structure. This expansion occurs because water’s hydrogen bonds create an open lattice in ice, unlike its liquid form. 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, impacting infrastructure design and ecological systems in cold regions, a critical topic in natural sciences.
