SILVER

Silver sinks because has more density than the water.

It's a good conductor of heat. 

It is not britelnes.

It's hard ,is not elastic.                                                                                                              

Silver is a chemical element.

Atomic number is 47 group 11 of the perodic table and the name of  this element is AG

There is not too much silver in nature.

It can be with other minerals like sulfuro or alone.

Silver is 1 of the7 metal most known in the world