The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

That’s why this periodic table clock really caught our eye. [gocivici]’s idea is a simple one: light up three different elements with three different colors for hours, minutes, and seconds ...

Bismuth, the 83rd element in the periodic table, has been known since ancient ... The word bismuth itself is derived from the German word 'wismuth' (white mass). Studies showed that it was used ...

The calcium reacts with the water but does not get nearly as hot as either the sodium or potassium. Also, the calcium hydroxide produced forms a white solid in the solution which is different from the ...

This forms a white oxide, which covers the surface. The metal below the surface does not react. The alkali metals burn vigorously when heated and placed in a gas jar of oxygen. The oxide forms as ...

The periodic table can be divided into metals and non ... Water molecules are made up of two elements - hydrogen (white atoms) and oxygen (red atoms). Water has a specific ratio of two hydrogen ...

The dramatic explosions of white dwarf stars at the ends of their ... They also provide the origin of many elements in our periodic table, such as titanium, iron and nickel, which are formed ...

This year we celebrate the 150 th anniversary of Mendeleev’s achievement in formulating the structure of the periodic table that we use today. He announced his structure in 1869, but the challenge of ...