The atomic symbol for gold is "Au" because the word ... you will notice that the atomic mass on the periodic table is a decimal; that's because the number is a weighted average of the various ...

As metals are added to gold during jewelry-making, the gold becomes less fine and the number of karats drops. For example, 12 karat gold contains 50% gold and 50% alloys by weight. The word karat ...

The periodic table is a way of arranging all of ... for example Oxygen is O but gold is actually Au. The number is an atomic number. Atoms are the smallest particle of a chemical element that ...

A main goal of many alchemists of the past was to turn lead into gold. This collection of links explores ... In this activity, students will use the online periodic table, ptable.com, to investigate a ...

Elements in the periodic table are arranged in order of increasing atomic number. The atomic number represents the number of protons in an atom's nucleus, uniquely identifying each element.