What is the density of ice at 0 °C?

What is the density of ice at 0 °C?

• A. 0.917 g/mL
• B. 0.918 g/mL
• C. 0.916 g/mL
• D. 1.000 g/mL

Answer: (A)

Density tells us how much mass fits into a given volume. Ice has a crystal structure held together by hydrogen bonds that creates a more open, spacious arrangement than liquid water. This extra open space means the same mass occupies a larger volume, so ice is less dense than water and can float. At 0 °C, the commonly cited density of ice is about 0.917 g per milliliter (roughly 917 kg/m^3). Among the options, that value is the best match for ice at 0 °C. The value near 1.000 g/mL corresponds to liquid water, not ice, and the other decimal options are just close but less standard.

Density tells us how much mass fits into a given volume. Ice has a crystal structure held together by hydrogen bonds that creates a more open, spacious arrangement than liquid water. This extra open space means the same mass occupies a larger volume, so ice is less dense than water and can float. At 0 °C, the commonly cited density of ice is about 0.917 g per milliliter (roughly 917 kg/m^3). Among the options, that value is the best match for ice at 0 °C. The value near 1.000 g/mL corresponds to liquid water, not ice, and the other decimal options are just close but less standard.