Explore how melting point changes with atomic number in the periodic table of elements via interactive plots.
Interactive periodic table with up-to-date element property data collected from authoritative sources. Look up chemical element names, symbols, atomic masses and other properties, visualize trends, or even test your elements knowledge by playing a periodic table game!
The PubChem Periodic Table provides three distinct views. Table View is the traditional periodic table any scientist would instantly recognize. List View provides a summary view, allowing you to see all properties available for each element at once. Game View, added as an educational feature, helps test your knowledge of element names and symbols.
Explore how electronegativity changes with atomic number in the periodic table of elements via interactive plots.
Periodic Table Hydrogen Hydrogen is a chemical element with symbol H and atomic number 1. Classified as a nonmetal, Hydrogen is a gas at 25°C (room temperature).
Explore atomic mass variations with atomic number in the periodic table through interactive plots on this informative platform.
Rolling boil of water in an electric kettle Boiling or ebullition is the rapid phase transition from liquid to gas or vapour; the reverse of boiling is condensation. Boiling occurs when a liquid is heated to its boiling point, so that the vapour pressure of the liquid is equal to the pressure exerted on the liquid by the surrounding atmosphere.
Boiling is the process by which a liquid turns into a vapor when it is heated to its boiling point. The change from a liquid phase to a gaseous phase occurs when the vapor pressure of the liquid is equal to the atmospheric pressure exerted on the liquid. Boiling is a physical change and molecules are not chemically altered during the process.