that water is a chemical compound made up of two hydrogen atoms and a single oxygen atom or H 2 O. For thousands of years, ...

The story of caesium’s discovery concerns three men – two men who worked in tandem to announce their discovery on May 10, ...

Like uranium 235, element 94 would be an incredibly powerful ... In this process, a liquid compound rises as it heats, falls as it cools, and tends to separate into its lighter and heavier ...