Physical Properties of Metals and Non-metals
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Answer:
Metals
Most elements are metals. This includes the alkali metals, alkaline earth metals, transition metals, lanthanides, and actinides. On the periodic table, metals are separated from nonmetals by a zig-zag line stepping through carbon, phosphorus, selenium, iodine, and radon. These elements and those to the right of them are nonmetals. Elements just to the left of the line may be termed metalloids or semimetals and have properties intermediate between those of the metals and nonmetals. The physical and chemical properties of the metals and nonmetals may be used to tell them apart.
Metal Physical Properties:
Lustrous (shiny)
Good conductors of heat and electricity
High melting point
High density (heavy for their size)
Malleable (can be hammered)
Ductile (can be drawn into wires)
Usually solid at room temperature (an exception is mercury)
Opaque as a thin sheet (can't see through metals)
Metals are sonorous or make a bell-like sound when struck
Metal Chemical Properties:
Have 1-3 electrons in the outer shell of each metal atom and lose electrons readily
Corrode easily (e.g., damaged by oxidation such as tarnish or rust)
Lose electrons easily
Form oxides that are basic
Fave lower electronegativities
Are good reducing agents
Metal: copper (left); metalloid: arsenic (center); and non-metal: sulfur (right).
Metal: copper (left); metalloid: arsenic (center); and non-metal: sulfur (right). Matt Meadows, Getty Images
Nonmetals
Nonmetals, with the exception of hydrogen, are located on the right side of the periodic table. Elements that are nonmetals are hydrogen, carbon, nitrogen, phosphorus, oxygen, sulfur, selenium, all of the halogens, and the noble gases.
Nonmetal Physical Properties:
Not lustrous (dull appearance)
Poor conductors of heat and electricity
Nonductile solids
Brittle solids
May be solids, liquids or gases at room temperature
Transparent as a thin sheet
Nonmetals are not sonorous
Nonmetal Chemical Properties:
Usually have 4-8 electrons in their outer shell
Readily gain or share valence electrons
Form oxides that are acidic
Have higher electronegativities
Are good oxidizing agents
thnks my 9 answers
METALS-
- THESE ARE MALLEABLE AND DUCTILE.
- THESE ARE SHINY.
- THESE ARE ELECTROPOSITIVE IN NATURE.
- THESE HAVE HIGH DENSITIES.
- METAL IS A GOOD CONDUCTOR OF ELECTRICITY AND HEAT.
NON METALS-
- THESE ARE BRITTLE AND CAN BE BREAKDOWN INTO PIECES.
- THESE ARE NON- LUSTROUS.
- THESE ARE ELECTRONEGATIVE IN NATURE.
- THESE HAVE LOW DENSITIES.
- NON- METAL IS A POOR CONDUCTOR OF ELECTRICITY AND HEAT.