Here's why:
* Expansion upon freezing: Most substances, including oil, expand when they freeze. This means the same amount of molecules occupies a larger volume, leading to a lower density.
* Exceptions: There are exceptions to this rule. Some oils, like palm oil, can exhibit a slight increase in density upon freezing due to their specific molecular structure and interactions.
However, it's important to note that:
* The density difference between frozen and liquid oil is usually small.
* The exact density of frozen oil can vary depending on the type of oil and the freezing temperature.
In most practical situations, it's safe to assume that frozen oil will be less dense than liquid oil.
