Is it true when earth's ice increases, ocean water gets saltier

There are many chemicals in seawater that make it salty. Most of them get there from rivers carrying so yes

Yes, it is true; when water freezes into ice, salt is pushed downward and increases the salinity of the water trapped there. 

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.