Since oil is a lipid, it does not freeze in the typical way freezing usually occurs, according to scientists at the University of Illinois. Lipids do not freeze, but the molecular movement slows down at colder temperatures.Continue Reading
Many lipids have a somewhat low melting temperature and some lipids are in liquid form even at room temperature. These lipids, including oils, are able to stay nearly in the same form no matter the temperature. Unlike water, lipids do not have a specific freezing point or melting point. The movement of the lipid's molecules will slow or stop depending on the decrease in temperature. Lipids will often become more solid when they are left in cold temperatures for long periods of time. This is not a true change in the structure of the lipids, but the chains of molecules simply have slower movements which allow the appearance of a solid.
Although lipids will not truly freeze, it does not take a lot of heat for them to get back to their original consistency. Lipids that have reached a somewhat solid form in colder temperatures can usually turn back into their liquid form after only a short amount of time in a normal room temperature atmosphere. There are some exceptions to the rules such as coconut oil, which is a solid at room temperature; and butter which turns into a solid more quickly in colder temperatures than other lipids.Learn more about Reference Books
Physical geology is the science concerned with examining the true properties of Earth and analyzing it in a way that allows scientists to become more familiar with the planet. Unlike other geological studies, physical geology focuses solely on the materials Earth is made of and the process that bring these materials into fruition.Full Answer >
When scientists classify organisms, they are grouping organisms together so they can have a way to study them in a more efficient manner. Since there are millions of organisms on the Earth, it’s much easier to group them together for better research methods.Full Answer >
There is no detailed record that explains when and how stomata was discovered, however, it is known that, in the 1990s, scientists learned of the genetic mechanisms that control the way a stomata develops. This study looked at the plant Arabidopsis and mapped the development process of the stomata as the plant grew from a pavement cell through various cell division processes to become a stoma.Full Answer >
Sighs are considered by scientists at the University of Leuven in Belgium to be the human body's natural way of resetting its respiratory system. People have been known to sigh for other reasons, however, like when they are tired, bored or stressed.Full Answer >