Critical points of the elements (data page) are points in which the properties of an element change significantly. For example, if you heat up a liquid it will eventually become a gas, and this change from liquid to gas is called the boiling point. This is a critical point because it is at this point that the properties of the element, such as its shape and texture, become different.Critical points of the elements can also be related to pressure. As pressure increases, certain elements can become more solid or even change into a different element. By looking at a data page, you can find out what these critical points are and how they can affect the element.