What type of elements make up most of the periodic table

Basic elements, and components make up most of the periodic table of elements 

The ones that make up life, matter.solids,liquids,and gasses

The density of water is 1 g/cm cubed and in order for the pebble to sink its density has to be greater than the density of water and in order for the twig to float its density has to be less than the density of water