physical properties matals Related: Physical Properties of Metals?

Question

physical properties matals Related:  Physical Properties of Metals?

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M- Malleable.
E- Electrical conductivity.
T- Tensile strength.
A- Affinity with air.
L- Lustrous.
S- Sonorous.

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• Lustrous
• Good conductots
• High melting point
• Malleable
• Ductile

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Good electricity and heat conductor, malleable, ductile, posses metalic luster, solid at room temperature except Mercury (Hg), opaque as thin sheet.

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Good electricity and heat conductor, malleable ,ductile, posses metalic lusture, solid at room temperature expect mercury, opaque as thin sheet.

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We associate metals with hard shiny objects, and nonmetals with dull, light objects. These are nothing but the physical properties of metals and nonmetals. We all know how useful metals and nonmetals are but do we know about their properties? Let’s find out about the physical properties of metals and nonmetals.

Physical Properties of Metals

The following are the physical properties of metal :

The physical properties make them useful for many purposes. For e.g. Copper is used in making electric wires, gold is used to make jewellery, stainless steel is used to make pots, pans, etcMetals react with nonmetals to form ionic bonds. For e.g. Sodium Chloride (NaCl)Metals are a good conductor of electricity which means that they can conduct electricity due to the free moving electrons present in them. Copper is used as wiring as it is a good conductor of electricity.Metals have high melting points and high boiling points as they have strong metallic bonds.All metals are physically lustrous. They have a lustre that makes them shine. Gold is used for making jewellery.Metals are hard, they can’t be broken easily and require a lot of energy and strength to break. Iron is used to make cars, buildings, ships, etc.Metals weigh a lot as they have a high density. Metals are heavy for their size.They don’t have flexibility and have tensile strength. Metals can’t be stretched.Metals are great conductors of heat. That’s why pots, pans, vessels are made of metals.

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Metals are hard ! metals have generally brownish color! Metals are sonorous! Metal are ductile ! metals are maleable ! metals are good conductors of heat and electricity!metals are generally solid room temperature however there is a exception for Mercury!

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Physical properties of Metals is
• Malleable
• Ductile
• Good conductors of heat.
• Good conductors of electricity.
• Solid at room temperature ( Expect mercury which is liquid metal at room temperature)
• Metallic luster
• High melting and boiling point .
• High density.

Answer

Answer

1) Physical state – Metals are solids at room temperature e.g. sodium, aluminum ,potassium, magnesium. There are exception to this. Mercury and gallium are metals but they are in liquid state at room temperature.

2) Luster – Metals have a shining surface called luster when freshly prepared. They have a quality of reflecting light from their surface and they can be polished e.g. metals like gold, silver, copper show this property.

3) Malleability – Metals can be beaten into thin sheets. This property is called malleability. Due to this property, metals can be rolled into sheets e.g. aluminum, copper, zinc can be beaten into sheets.

4) Ductility – Metals can be drawn into thin wires. This property is called ductility. For example, 100 grams of silver can be drawn into a thin wire about 200 meters long.

5) Hardness – Metals are generally hard e.g. iron, cobalt, nickel. There are few exceptions to this. Sodium and potassium are soft and they can be cut with a knife.

6) Conduction – Generally, metals are good conductors of heat and electricity because they have free electrons. Silver and copper are the two best conductors . Relatively, lead and bismuth are poor conductors of heat and electricity.

7) Density – Metals generally have high density and they are heavy. Iridium and osmium have the highest densities while lithium has the lowest density.

8) Melting and boiling point – Metals usually have high melting point and boiling point. For example, iron, cobalt and nickel have high melting and boiling point. Tungsten has the highest melting point. There are some exceptions to this. For example , most of the alkali metals have low melting and boiling point.

9) Tensile strength – Most of the metals possess high tensile strength i.e. tenacity. For example, iron, titanium, some alloys have high tensile strength. However, elements like sodium, potassium and mercury do not possess tenacity.

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Answer

Physical properties of metals refer to the characteristics that can be observed or measured without changing the chemical composition of the metal. These properties help in identifying and differentiating metals from non-metals. Some of the important physical properties of metals are explained below:

Malleability
Metals are known for their malleability, which is the ability to be hammered or beaten into thin sheets without breaking. This property is due to the metallic bond, which allows the atoms to slide past each other when subjected to external force.

Ductility
Metals are also ductile, meaning they can be drawn into wires without breaking. The metallic bond enables the atoms to align and stretch under tension, allowing the metal to be drawn into a thin wire.

Conductivity
Metals are excellent conductors of heat and electricity. This is because the delocalized electrons in the metallic bond can move freely, carrying heat or electricity through the metal.

Luster
Metals generally have a shiny or metallic luster. This is because the free electrons in the metallic bond absorb and re-emit light, giving the metal its characteristic shine.

High Density
Metals are usually dense materials with high atomic or molecular packing. This property is due to the close packing of atoms or ions in the metallic structure.

High Melting and Boiling Points
Metals generally have high melting and boiling points compared to non-metals. The strong metallic bond requires a high amount of energy to break, resulting in high melting and boiling points.

Hardness
Metals vary in hardness, with some being very soft (e.g., sodium) and others being very hard (e.g., titanium). The hardness of a metal depends on various factors, including the crystal structure and the presence of impurities or alloying elements.

Sonorousness
Metals produce a characteristic ringing sound when struck. This property is due to the ability of the metal to vibrate and transmit sound waves efficiently.

In summary, metals exhibit several physical properties such as malleability, ductility, conductivity, luster, high density, high melting and boiling points, hardness, and sonorousness. These properties make metals useful in various applications, including construction, electrical wiring, and manufacturing of tools and machinery.

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