Definition and properties The boiling point is the characteristic temperature at which a substance passes from the liquid to the gaseous state. The liquid and gaseous phases are in equilibrium at this point. A typical example is water, which starts boiling at 100 °C and becomes water vapor. The boiling point depends on the pressure. … Boiling Point
Structure of matter Our earth, nature, all living things, objects, the continents, mountains, oceans and we ourselves are made of chemical elements that are connected in different ways. Life has come into being through the connection of elements. Chemical elements are atoms with the same number of protons in the nucleus. The number is called … Chemical Elements
Definition and properties Melting point is a characteristic temperature at which a substance changes from solid to liquid state. At this temperature, the solid and liquid occur in equilibrium. A typical example is ice, which melts at 0 °C and becomes liquid water. The melting point is slightly dependent on atmospheric pressure, which is why … Melting Point
