Question

Char3
Nostals and non-Metals​

Answer 1

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Answer:

Non-metals

Nonmetal Physical Properties:

1. Not lustrous (dull appearance)
2. Poor conductors of heat and electricity
3. Non-ductile solids

Nonmetal Chemical Properties:

1. Usually have 4-8 electrons in their outer shell
2. Readily gain or share valence electrons
3. Form oxides that are acidic

Metals

Metal Physical Properties:

1. Lustrous (shiny)
2. Good conductors of heat and electricity
3. High melting point

Metal Chemical Properties:

1. Have 1-3 electrons in the outer shell of each metal atom and lose electrons readily
2. Corrode easily (e.g., damaged by oxidation such as tarnish or rust)
3. Lose electrons easily

Explanation:

Both metals and nonmetals take different forms (allotropes), which have different appearances and properties from each other. For example, graphite and diamond are two allotropes of the nonmetal carbon, while ferrite and austenite are two allotropes of iron. While nonmetals may have an allotrope that appears metallic, all of the allotropes of metals look like what we think of as a metal (lustrous, shiny).