Examples of Metals and Nonmetals
You have must seen electric wires in between utility poles on road sides , silver utensils and coloured aluminium sheet for making roof. Have you ever thought that what the common thing in all these is? Correct, all are solid in form and metal. Have you seen diamond? Yes that is also hard and solid. What's about sulphur powder? Do you think any common thing in both of them? Both are non-metals. So how can you identify about metal and nonmetal. We can see luster on copper utensils in your kitchen.
Almost all metals are hard and have shiny luster. Electric wires are made up of copper and aluminum, which are very good conductor of electricity. Have you ever seen any nonmetal in electric wire? We cannot form phosphorus or sulphur in wire form. Nonmetal cannot convert in wire or sheet form but metals can roll into sheets and draw into wire hence show high malleability and ductility. Non-metal cannot be changed easily because they are brittle and will break. Metals are heavy in weight with high density and high melting and boiling points.
Apart from this nonmetals are just opposite to this with less density and low melting and boiling points. Metallic oxides like sodium oxide are basic, ionic while Non-metallic oxides like carbon dioxide are acidic compounds. Metal atoms energized with heat and allow thermal energy to move easily through them as they are good conductor of heat. Periodic table that is a tabular form of arrangement of all naturally occurring elements contains both metals and non-metals. Out of all elements more than 75% elements are metal in nature and positioned at left side of table. All nonmetals arranged at right side of table, are very different from metals. Metal and non-metals are separated by certain elements known as metalloid which show intermediate properties. Metal atom can easily lose valence electron to form cation.
These oppositely charge ion locates in crystal to form a sea of electron. The result this is that there are layers of positive ions surrounded by a "sea" of valence electrons. The negative charges of the electrons hold the positive ions in place, and vice versa. These free electrons are responsible for conductivity of metals. The metallic lustre is caused by free electrons as they can reflect light. Due to metallic bond between free electrons and metal cation, metals show malleability and ductility.
The disadvantage of these free electrons is corrosive nature if metal, which is due to oxygen gas in the atmosphere, creates an imbalance of electrons and positive ions in the metal and rust is produced. All metal show electropositive nature as they can loss their valence shell electron to become stable. Therefore when a metal atom loses electrons it becomes metal cation.
The energy required to remove electron is known as ionization potential. The reactivity of metals increases with decreasing the ionization potential. On the other hand, nonmetals are positioned at right side of periodic table ,have 3 to 7 electrons in it valence shell , hence they have a tendency to gain electrons and form anions.
So non-metals are electronegative in nature. The process of accept electron release some amount of energy is known as electron affinity. Therefore high electron affinity of nonmetal imparts high reactivity to nonmetal. Some common examples of metals and non-metals are as given below;
|| Metal or Non-metal
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Answers:Properties of Metals:
* Metals are usually opaque, hard solids with high density and have shiny, silvery luster, when cut or scratched.
* Metals have strong metallic bonds that make them malleable, ductile and easy to bend. They have high melting points, boiling points and density. Metals can be hammered into new shapes because they are malleable. Metals can be drawn into a wire because they are ductile.
* Metals have freely moving electrons and thus are good conductors of electricity and heat.
* Metals may form oxides that turn moist litmus blue. For example, calcium oxide dissolves in water to form the alkali calcium hydroxide. Some metals form a surface layer of oxide that prevents more oxidation, such as Al, Cr, Mg and Zn.
* Reactive metals have stable compounds.
* Stable metals have compounds that easily decompose.
Properties of non-metals:
* Non-metals may be monatomic, such as Ne and He; polyatomic, such as F2; or network solids, such as diamond.
* Non-metals may be solids, liquids or gases at room temperature.
* Non-metals that are solids, are usually dull and brittle, and have low density.
* Non-metals are usually poor conductors of electricity and heat.
* Non-metals usually form oxides that turn moist litmus red. For example, carbon dioxide dissolves in water to form the weak acid, carbonic acid (H2CO3).
* Exceptions to the properties of non-metals include graphite carbon that conducts electricity and silicon that has many physical properties of a metal.
Answers:Uh... just any two examples of non-metals?
Wood, and um... cheese.
Glad I could help.
Question:and if you want why they are good for their job (if they have one)
Answers:Examples of Metals are gold, copper, lead, zinc, iron, magnesium, sodium, calcium and mercury.
What metal is used in household plumbing and wiring ?
What metal is used in jewelry and is an excellent electrical conductor ?
What metal is used in traditional photographic film
Question:I have this science test tomorrow and I REALLY don't get the Periodic Table.
I need some help. ANYTHING.
For example, what are halogens? their properties?
what are noble gases? what are their properties?
Left side of the periodic table is metals. Right side is non metals. the dark like that always shows up and makes a zig-zap 3/4 of the way on the table shows the separation. Every element that touches that line is a metaloid
Metals are shiny, ductile, malleable, and conduct electricity well
Non metals do not
Metaliods display both properties
Nobel gases are the right most column. They are pretty non reactive because their electron shells are full
Haogens are the column next to the nobel gases, they are extremely reactive because they are only one electron away from being stable.
Meet the Non-Metal Family :Phinneus Phosphorus introduces you to the members of the the non-metal family on the periodic table (carbon, oxygen, nitrogen, sulfur, and phosphorus, of course). [Used as a exemplary example for students when starting their families of elements projects]
Non-Metals :The Non-Metal Selector Test