Unit-1 chapter-4 Pg:- 34,35,36
Metals:
Make up the majority of elements in the periodic table.
Located on the left side and bottom of the table (excluding the noble gases on the far right).
Generally shiny, hard, and good conductors of heat and electricity.
Malleable (can be hammered into thin sheets) and ductile (can be drawn into wires).
Examples: iron (Fe), copper (Cu), gold (Au), aluminum (Al).
Nonmetals:
Found on the upper right side of the periodic table.
Have properties opposite to metals.
Typically dull, brittle, and poor conductors of heat and electricity.
Can exist as solids, liquids, or gases at room temperature.
Examples: oxygen (O), carbon (C), sulfur (S), chlorine (Cl), helium (He).
Metalloids:
These are a small group of elements that lie along a diagonal line separating metals and nonmetals.
They have properties of both metals and nonmetals.
Examples: silicon (Si), boron (B), and germanium (Ge).
Metal Sand:
There isn't a naturally occurring element called "metal sand." Sand itself is a loose granular material that can be composed of various minerals, including:
Metal oxides: These are compounds where a metal is bonded to oxygen. For example, quartz sand (SiO2) is the most common type of sand, and it's made of silicon dioxide (silicon is a metalloid, and oxygen is a nonmetal).
Nonmetal elements: Sand can also contain non-metallic elements like silicon itself or even some non-oxide minerals.