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 ...

and this allows us to make predictions about other elements. Gethin: And today we're going to be looking at the periodic table. Let's take a look at some Group 1 metals then - also known as ...

While you're watching, look out for where different elements are found in the periodic table. Mrs Roberts: So, here I have an empty pop can. This is made of aluminium. Aluminium is an element.

If you're enjoying this article ... the socalled “natural system” or periodic system of the elements. The periodic table thus established remained until the end of the last century unchanged ...

The periodic table of elements—also known as Mendeleev’s table—was developed in 1869 by Russian chemist Dmitri Mendeleev. It organizes all known chemical elements by their atomic number ...

You interact with about two-thirds of the elements of the periodic table every day. Some, like carbon, oxygen, and nitrogen, make up our bodies and the air we breathe. Yet there is also a class of ...