At what temperature does water have its maximum density?

Question

Quizplus · Accepted Answer

Water has its maximum density of 1g/cm³ at 4 degrees Celsius. When the temperature changes from either greater or less than 4 degrees, the density will become less than 1 g/cm³. Water is liquid at room temperature. This allows the molecules to move around more quickly than when it exists as a solid (ice). The faster speed at which they move results in fewer opportunities for hydrogen bonding, which allows the molecules to be packed more closely together in its liquid form. Each water molecule can link to four others, creating a tetrahedral structure. However, they are able to move freely and slide past each other when water is in liquid form. Ice, on the other hand, forms a solid, larger hexagonal structure as the molecules form hydrogen bonds with one another at a greater frequency due to the slower speed of the molecules at that temperature.

At What Temperature Does Water Have Its Maximum Density