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The document is a PowerPoint presentation about the characteristics of metals. It discusses how metals are hard and shiny in appearance. It lists key properties of metals like malleability, ductility, hardness, and metallic luster. Metals can be hammered into thin sheets or drawn into thin wires due to their malleability and ductility. They are good conductors of both heat and electricity. Common uses of metals include making electric wires, foil, utensils, farming tools, and bells.
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Metals
This document discusses the general characteristics of metals, including malleability, ductility, metallic lustre, thermal conductivity, electric conductivity, sonority, and hardness. It provides examples for some of the most notable metals for each characteristic, such as gold being the most malleable and silver being the best thermal and electric conductor. The document aims to describe the key properties that metals share and how they differ in levels of each property.
properties of metals.
Metals have several key properties - they are malleable and can be beaten into thin sheets, ductile so they can be drawn into thin wires, sonorous and produce sound when struck, generally hard in nature, and are good conductors of heat and electricity. Metals also have lustre and are shiny.
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Metals have several physical properties including high electrical and thermal conductivity, malleability, ductility, and a metallic luster. The document defines metals as substances that readily lose electrons to form positive ions, and lists some of their key physical properties. It provides examples of how metals can be hammered into thin sheets due to malleability and stretched into wires due to ductility. Sonority is defined as a metal's ability to produce sound when tapped. The document also includes a table comparing the melting points, boiling points, and densities of several common metals.
The properties of metals
The document discusses various physical and chemical properties of metals that affect their working qualities. It describes properties such as malleability, which is the ability to be hammered into shape without breaking and includes metals like mild steel and aluminum. Ductility refers to a metal's ability to be drawn into fine wires, exemplified by copper and mild steel. Conductivity is a metal's power to allow heat and electricity to flow through, seen in copper and silver. The document provides examples of different metals that demonstrate properties like toughness, brittleness, hardness, elasticity and fusibility.
Metals non metals
This document discusses the physical and chemical properties of metals and non-metals. It describes ductility as a metal's ability to be drawn into thin wires, and malleability as its ability to be hammered into thin sheets. Metals are good conductors of electricity due to their free-flowing electrons, can produce ringing sounds, and have high melting points. Non-metals cannot be drawn into wires or bent into sheets as they are brittle, and do not conduct electricity well. Metalloids like boron and silicon exhibit some properties of metals and non-metals, and are used as semiconductors.
Insulators
This document provides information about electrical insulators. It discusses the materials used for insulators like porcelain, glass, and composite polymers. It also describes the design considerations for insulators to withstand high voltages without breakdown. The types of insulators for overhead power lines are identified as pin, post, suspension, and strain insulators. Class 1 and Class 2 insulation standards are explained. Finally, applications of insulators in high voltage systems, circuit boards and electric wires are mentioned.
Conductors and its types
This Slide is generated with 11 Pages, to present a short presentation in class on conductor and its types with time lapse is given to every slide to automatically next slide as you present one by one.
time is flexible and need to practice once.
Thank you.
Electrical Conductor
An electrical conductor is a material that allows the flow of electric current. Most metals are good electrical conductors as their atomic structure allows electrons to move freely between atoms when a potential difference is applied. Conductors are classified into different types including plasma, semiconductors, and resistors, with plasma being the best conductor and resistors making electric current flow most difficult. Conductors are contrasted with insulators, which do not allow the passage of electricity. Common good electrical conductors include silver, copper, and aluminum, while materials like rubber, glass, and dry paper are typical electrical insulators.
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Metals
This document discusses the general characteristics of metals, including malleability, ductility, metallic lustre, thermal conductivity, electric conductivity, sonority, and hardness. It provides examples for some of the most notable metals for each characteristic, such as gold being the most malleable and silver being the best thermal and electric conductor. The document aims to describe the key properties that metals share and how they differ in levels of each property.
properties of metals.
Metals have several key properties - they are malleable and can be beaten into thin sheets, ductile so they can be drawn into thin wires, sonorous and produce sound when struck, generally hard in nature, and are good conductors of heat and electricity. Metals also have lustre and are shiny.
Blog
Metals have several physical properties including high electrical and thermal conductivity, malleability, ductility, and a metallic luster. The document defines metals as substances that readily lose electrons to form positive ions, and lists some of their key physical properties. It provides examples of how metals can be hammered into thin sheets due to malleability and stretched into wires due to ductility. Sonority is defined as a metal's ability to produce sound when tapped. The document also includes a table comparing the melting points, boiling points, and densities of several common metals.
The properties of metals
The document discusses various physical and chemical properties of metals that affect their working qualities. It describes properties such as malleability, which is the ability to be hammered into shape without breaking and includes metals like mild steel and aluminum. Ductility refers to a metal's ability to be drawn into fine wires, exemplified by copper and mild steel. Conductivity is a metal's power to allow heat and electricity to flow through, seen in copper and silver. The document provides examples of different metals that demonstrate properties like toughness, brittleness, hardness, elasticity and fusibility.
Metals non metals
This document discusses the physical and chemical properties of metals and non-metals. It describes ductility as a metal's ability to be drawn into thin wires, and malleability as its ability to be hammered into thin sheets. Metals are good conductors of electricity due to their free-flowing electrons, can produce ringing sounds, and have high melting points. Non-metals cannot be drawn into wires or bent into sheets as they are brittle, and do not conduct electricity well. Metalloids like boron and silicon exhibit some properties of metals and non-metals, and are used as semiconductors.
Insulators
This document provides information about electrical insulators. It discusses the materials used for insulators like porcelain, glass, and composite polymers. It also describes the design considerations for insulators to withstand high voltages without breakdown. The types of insulators for overhead power lines are identified as pin, post, suspension, and strain insulators. Class 1 and Class 2 insulation standards are explained. Finally, applications of insulators in high voltage systems, circuit boards and electric wires are mentioned.
Conductors and its types
This Slide is generated with 11 Pages, to present a short presentation in class on conductor and its types with time lapse is given to every slide to automatically next slide as you present one by one.
time is flexible and need to practice once.
Thank you.
Electrical Conductor
An electrical conductor is a material that allows the flow of electric current. Most metals are good electrical conductors as their atomic structure allows electrons to move freely between atoms when a potential difference is applied. Conductors are classified into different types including plasma, semiconductors, and resistors, with plasma being the best conductor and resistors making electric current flow most difficult. Conductors are contrasted with insulators, which do not allow the passage of electricity. Common good electrical conductors include silver, copper, and aluminum, while materials like rubber, glass, and dry paper are typical electrical insulators.
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The document describes a student project to build a small-scale model of a rail gun to launch model aircraft. The rail gun works by using high electrical currents to accelerate a conductive projectile along conductive rails without explosives. The students researched how rail guns work and are designing their model to be safe, using aluminum rails and a small power source. They have encountered issues with dimensions, wires disconnecting, and the projectile not launching, but have been troubleshooting solutions such as premeasuring, checking wire connections, and testing different projectiles and positions. Their most recent test produced a spark across the nail projectile.
5.3-Electroplating
Electroplating is a process where the surface of one metal is coated with a layer of a different metal. The metal being used to coat is less reactive than the one being coated. The anode is made from the pure metal used to coat, while the cathode is the object being electroplated. The electrolyte is an aqueous solution of a soluble salt of the pure metal at the anode. Electroplating is done to make metals more resistant to corrosion or damage and also to improve their appearance, such as chromium and nickel plating for resistance and silver plating cutlery for appearance.
Metals
Metals are good conductors of heat and electricity. They are usually malleable and ductile, allowing them to be hammered into thin sheets or drawn into wires. This is due to their strong metallic bonds and free-flowing electrons. However, pure metals can be too soft or brittle for many applications. Alloys modify the properties of pure metals, making them harder, less brittle, and more corrosion resistant through combining different ratios of metals. Non-metals are generally dull, brittle, poor conductors of heat and electricity, have lower melting points than metals, and are not malleable or ductile.
physical properties of metals
Metals have many physical properties including malleability, ductility, hardness, metallic lustre, thermal conductivity, and electrical conductivity. Gold is the most malleable metal and can be beaten into sheets with an area of 6.7 square feet from just 1 gram of gold. Platinum is the most ductile metal and 1 gram can be drawn into a wire over 2km in length. Metals such as silver conduct heat and electricity well, making them useful for applications like electrical wires and cooking utensils.
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You must have experienced a feeling of electric shock while opening the window of your car or coming in contact with wires in wet condition. Have you ever tried why you experience this shock feeling? Copy the link given below and paste it in new browser window to get more information on Conductors and Insulators www.askiitians.com/iit-jee-electrostatics/conductors-and-insulators/
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Metals are strong, shiny, good conductors of heat and electricity, can be shaped into wires, make a ringing sound when struck, and some are magnetic. Non-metals do not share these properties and are generally less reactive than metals. The document sorts common elements into metals and non-metals based on their properties and reactivity, with lithium, sodium, and potassium being the most reactive metals with water.
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This document discusses the classification of different types of materials based on their energy band structure. It describes conductors as materials with both full valence and conduction bands, allowing free electron flow. Insulators are defined as having a full valence band and empty conduction band, prohibiting electron movement. Semiconductors have a partially filled conduction band, with conducting properties in between conductors and insulators. Intrinsic semiconductors have equal numbers of electrons and holes, while extrinsic semiconductors are doped with impurities to become either N-type with extra electrons or P-type with electron deficiencies. The document provides examples to illustrate each classification.
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The document describes the design and testing of a rail gun. It aims to launch aircraft planes off of carriers and supply space stations in a controlled manner, unlike hobby rail guns that fire projectiles as fast as possible. The rail gun uses capacitors as a power source and aluminum rails and projectiles due to its conductive and heat-resistant properties. Several tests were conducted but the projectile did not launch fully due to issues with dimensions, wiring, discharge, and energy dissipation in the wires. A spark was achieved in one test but the projectile remained stuck.
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Here is another creative presentation by your slide maker on the topic “ELECTROPLATING". Hope you like it. If you like it then please, *like*, *Download* and *Share*. By- Slide_maker4u (Abhishek Sharma) *******For presentation Orders, contact me on the Email addresses Written below
******** Email- Sharmaabhishek576@gmail.com or Sharmacomputers87@gmail.com
*******THANK YOU***************
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Metals make up about 3/4 of all elements and have several defining properties, including high melting points, conductivity of heat and electricity, strength and hardness. Metals are obtained from ores through extraction processes involving chemical reactions at high temperatures. Iron and steel rust when exposed to water and oxygen, but salt and acid rain can accelerate the process. Different metals like aluminum, copper, gold, and steel are used for various applications based on their properties and costs. Alloys are mixtures of metals that can enhance properties like hardness. Common alloys include brass and bronze. Most metals can be recycled to recover their materials.
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Metals are materials that are typically hard, opaque, shiny and good conductors of heat and electricity. They have properties such as malleability, ductility, hardness, metallic luster, and high melting points and densities. Some key properties include being able to be hammered into thin sheets or drawn into thin wires. Metals also produce sound when tapped and are generally solid at room temperature, except for mercury. They are essential materials used across many industries and applications.
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Metals are typically hard, shiny materials that conduct heat and electricity well. They exist as solids at room temperature, except for a few like mercury. Metals reflect light well due to their loosely bound outer electrons. Other key properties include malleability, ductility, conductivity, density, and high melting and boiling points. Metals conduct electricity and heat well because their molecular bonding allows free electrons to move freely within their structure when a current is applied.
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Metals play an important role in everyday life and are used to make vehicles, furniture, electronic devices, and utensils. Metals have properties like metallic luster, hardness, malleability, conductivity of heat and electricity, and sonority. Metals are classified as soft metals, like sodium, that can be cut with a knife or hard metals, like iron, that are very difficult to cut.
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The document discusses dental casting alloys. It begins by introducing the major classes of materials used in dentistry - metals, ceramics, and polymers. Metals are further divided into dental amalgams, noble metal alloys containing gold, palladium, silver, and base metal alloys containing nickel or cobalt.
The document then discusses the history of metals in dentistry from ancient times to modern developments like porcelain fused to metal techniques. It also discusses how the price of gold led to new alloys replacing it with palladium or eliminating it entirely in the 1970s.
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The document describes a student project to build a small-scale model of a rail gun to launch model aircraft. The rail gun works by using high electrical currents to accelerate a conductive projectile along conductive rails without explosives. The students researched how rail guns work and are designing their model to be safe, using aluminum rails and a small power source. They have encountered issues with dimensions, wires disconnecting, and the projectile not launching, but have been troubleshooting solutions such as premeasuring, checking wire connections, and testing different projectiles and positions. Their most recent test produced a spark across the nail projectile.
5.3-Electroplating
Electroplating is a process where the surface of one metal is coated with a layer of a different metal. The metal being used to coat is less reactive than the one being coated. The anode is made from the pure metal used to coat, while the cathode is the object being electroplated. The electrolyte is an aqueous solution of a soluble salt of the pure metal at the anode. Electroplating is done to make metals more resistant to corrosion or damage and also to improve their appearance, such as chromium and nickel plating for resistance and silver plating cutlery for appearance.
Metals
Metals are good conductors of heat and electricity. They are usually malleable and ductile, allowing them to be hammered into thin sheets or drawn into wires. This is due to their strong metallic bonds and free-flowing electrons. However, pure metals can be too soft or brittle for many applications. Alloys modify the properties of pure metals, making them harder, less brittle, and more corrosion resistant through combining different ratios of metals. Non-metals are generally dull, brittle, poor conductors of heat and electricity, have lower melting points than metals, and are not malleable or ductile.
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Metals have many physical properties including malleability, ductility, hardness, metallic lustre, thermal conductivity, and electrical conductivity. Gold is the most malleable metal and can be beaten into sheets with an area of 6.7 square feet from just 1 gram of gold. Platinum is the most ductile metal and 1 gram can be drawn into a wire over 2km in length. Metals such as silver conduct heat and electricity well, making them useful for applications like electrical wires and cooking utensils.
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You must have experienced a feeling of electric shock while opening the window of your car or coming in contact with wires in wet condition. Have you ever tried why you experience this shock feeling? Copy the link given below and paste it in new browser window to get more information on Conductors and Insulators www.askiitians.com/iit-jee-electrostatics/conductors-and-insulators/
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Metals are strong, shiny, good conductors of heat and electricity, can be shaped into wires, make a ringing sound when struck, and some are magnetic. Non-metals do not share these properties and are generally less reactive than metals. The document sorts common elements into metals and non-metals based on their properties and reactivity, with lithium, sodium, and potassium being the most reactive metals with water.
Professional powerpoint ppt
This document discusses the classification of different types of materials based on their energy band structure. It describes conductors as materials with both full valence and conduction bands, allowing free electron flow. Insulators are defined as having a full valence band and empty conduction band, prohibiting electron movement. Semiconductors have a partially filled conduction band, with conducting properties in between conductors and insulators. Intrinsic semiconductors have equal numbers of electrons and holes, while extrinsic semiconductors are doped with impurities to become either N-type with extra electrons or P-type with electron deficiencies. The document provides examples to illustrate each classification.
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The document summarizes the extraction and properties of metals, non-metals, and noble gases. It discusses that metals are usually extracted via electrolytic reduction or reduction using carbon or carbon monoxide depending on their reactivity. Extraction involves concentrating the ore, reducing the metal from its oxide form, and sometimes refining to purify the metal. Non-metals tend to gain or share electrons and form acidic or neutral oxides. They are extracted from compounds in nature and bromine extraction from sea water is discussed as an example. Noble gases are separated from liquefied air using fractional distillation based on their boiling points.
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The document describes the design and testing of a rail gun. It aims to launch aircraft planes off of carriers and supply space stations in a controlled manner, unlike hobby rail guns that fire projectiles as fast as possible. The rail gun uses capacitors as a power source and aluminum rails and projectiles due to its conductive and heat-resistant properties. Several tests were conducted but the projectile did not launch fully due to issues with dimensions, wiring, discharge, and energy dissipation in the wires. A spark was achieved in one test but the projectile remained stuck.
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Here is another creative presentation by your slide maker on the topic “ELECTROPLATING". Hope you like it. If you like it then please, *like*, *Download* and *Share*. By- Slide_maker4u (Abhishek Sharma) *******For presentation Orders, contact me on the Email addresses Written below
******** Email- Sharmaabhishek576@gmail.com or Sharmacomputers87@gmail.com
*******THANK YOU***************
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Metals make up about 3/4 of all elements and have several defining properties, including high melting points, conductivity of heat and electricity, strength and hardness. Metals are obtained from ores through extraction processes involving chemical reactions at high temperatures. Iron and steel rust when exposed to water and oxygen, but salt and acid rain can accelerate the process. Different metals like aluminum, copper, gold, and steel are used for various applications based on their properties and costs. Alloys are mixtures of metals that can enhance properties like hardness. Common alloys include brass and bronze. Most metals can be recycled to recover their materials.
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Civil engineering deals with the design, construction, and maintenance of infrastructure like roads, bridges, buildings, and water systems. Ferrous metals contain iron and are magnetic, while non-ferrous metals do not contain iron and are not magnetic. Common ferrous metals include mild steel, carbon steel, stainless steel, and cast iron. Common non-ferrous metals include aluminum, copper, brass, silver, and lead. Ferrous metals like mild steel, carbon steel, and cast iron are widely used in engineering and construction due to their strength and magnetic properties. Non-ferrous metals have applications as well due to properties like corrosion resistance, conductivity, and light weight.
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Thank You!
Nickel electroplating
Nickel electroplating provides benefits like increased corrosion resistance, improved hardness and strength, resistance to wear, and improved ductility. During nickel plating, nickel ions are reduced at the cathode through a reduction reaction, while the anode undergoes an oxidation reaction that dissolves metal. The thickness of a nickel plate coating is affected by applying direct current over time at a certain current density per unit area being plated.
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Those wishing to sell discarded metal must knowwhat are the differences between ferrous and non-ferrous metals for recycling.
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Metals ppt
Metals are materials that are typically hard, opaque, shiny and good conductors of heat and electricity. They have properties such as malleability, ductility, hardness, metallic luster, and high melting points and densities. Some key properties include being able to be hammered into thin sheets or drawn into thin wires. Metals also produce sound when tapped and are generally solid at room temperature, except for mercury. They are essential materials used across many industries and applications.
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Metals
Metals are typically hard, shiny materials that conduct heat and electricity well. They exist as solids at room temperature, except for a few like mercury. Metals reflect light well due to their loosely bound outer electrons. Other key properties include malleability, ductility, conductivity, density, and high melting and boiling points. Metals conduct electricity and heat well because their molecular bonding allows free electrons to move freely within their structure when a current is applied.
Powerpoint presentation
Metals play an important role in everyday life and are used to make vehicles, furniture, electronic devices, and utensils. Metals have properties like metallic luster, hardness, malleability, conductivity of heat and electricity, and sonority. Metals are classified as soft metals, like sodium, that can be cut with a knife or hard metals, like iron, that are very difficult to cut.
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The document discusses dental casting alloys. It begins by introducing the major classes of materials used in dentistry - metals, ceramics, and polymers. Metals are further divided into dental amalgams, noble metal alloys containing gold, palladium, silver, and base metal alloys containing nickel or cobalt.
The document then discusses the history of metals in dentistry from ancient times to modern developments like porcelain fused to metal techniques. It also discusses how the price of gold led to new alloys replacing it with palladium or eliminating it entirely in the 1970s.
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NCERT Chapter- 3 Metals & Non-metals pdf
Metals and Non-Metals form a fundamental classification of elements, playing a pivotal role in understanding the diverse world of chemistry. In Class 10, students delve into the distinct characteristics, properties, and reactions that define these two broad categories. Metals, with their conductivity and malleability, stand in stark contrast to the non-metals, which exhibit varying physical and chemical traits. These notes provide a concise exploration of the essential attributes of metals and non-metals, offering a foundational understanding for students to navigate the complexities of chemical interactions and classifications in the realm of science.
METALS AND NON-METAL.pptx
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Properties of metals and non metals
Metals have properties of luster, conductivity, malleability, and ductility. They are solid except for mercury and have high density. Metals are good conductors of heat and electricity. Nonmetals have properties of being dull, brittle, poor conductors, and low density. Most nonmetals exist as gases at room temperature. Metals tend to lose electrons in chemical bonds while nonmetals tend to gain electrons in chemical bonds.
Metalsnonmetalsmetalloids presentation
Metals, nonmetals, and metalloids can be distinguished by their physical properties. Metals are typically solids, shiny, malleable, and good conductors of heat and electricity. Nonmetals may be solids, liquids, or gases, have a dull luster, and are poor conductors. Metalloids have properties in between metals and nonmetals, and some are useful semiconductors. Most metals are found combined with other elements in minerals and ores in the Earth's crust. Carbon is unusual in that it can form graphite, which is brittle, or diamonds, the hardest natural material, depending on the arrangement of carbon atoms.
Metals ferrous and nonferrous
This document provides information on non-ferrous metals. It begins by defining non-ferrous metals as metals that do not contain iron. Examples of non-ferrous metals given include aluminum, copper, zinc, tin, lead, silver, gold, and magnesium. The document then provides details on these different non-ferrous metals, including their properties, common uses, and melting points. It also discusses non-ferrous metal alloys such as brass, bronze, and solder. In addition, the document covers electroplating and anodizing as surface treatment processes for metals.
Metals and non metals
The document discusses the properties of metals, nonmetals, and metalloids according to their locations on the periodic table. Metals are found to the left of the zig-zag line, are typically solids, and have properties like luster, ductility, malleability, and high melting points. Nonmetals are located to the right and have properties such as being dull, brittle, low density, and low melting points. Metalloids are clustered around the zig-zag line and exhibit properties in between metals and nonmetals.
Metals nonmetals ppt.ppt
This document discusses the properties of metals, nonmetals, and metalloids. Metals are solid, shiny, malleable, ductile, and good conductors of heat and electricity. Nonmetals are brittle, dull, and poor conductors. Metalloids have properties between metals and nonmetals - they can be shiny or dull, somewhat malleable and ductile, and moderate conductors. The document instructs the reader to make a chart listing physical and chemical properties of each group.
metals and nonmetals
This document discusses the properties of metals, nonmetals, and metalloids. Metals are solid, shiny, malleable, ductile, and good conductors of heat and electricity. Nonmetals are brittle, dull, and poor conductors. Metalloids have properties between metals and nonmetals - they can be shiny or dull, somewhat malleable and ductile, and moderate conductors. The document instructs the reader to make a chart listing physical and chemical properties of each group.
M NM M Review and Practice metals nonmetals etc ppt.ppt
This document discusses the properties of metals, nonmetals, and metalloids. Metals are solid, shiny, malleable, ductile, and good conductors of heat and electricity. Nonmetals are brittle, dull, and poor conductors. Metalloids have properties between metals and nonmetals - they can be shiny or dull, somewhat malleable and ductile, and moderate conductors. The document instructs the reader to make a chart listing physical and chemical properties of each group.
Dental casting alloys / dentistry universities
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Dental casting alloys / dentistry universities
Indian Dental Academy: will be one of the most relevant and exciting
training center with best faculty and flexible training programs
for dental professionals who wish to advance in their dental
practice,Offers certified courses in Dental
implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic
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0-49982764796325655371.pptx
This document provides information about metals and metallurgy. It discusses the properties of metals including their luster, malleability, ductility, and ability to conduct heat and electricity. It explains that metals are usually alloys consisting of mixtures of metals or metals and non-metals. Metallic bonding is described as the interaction between metal ions and delocalized valence electrons that provides cohesion. The document also distinguishes between ferrous and non-ferrous metals, provides examples of common alloys, and gives an overview of metallurgy including the three main steps of concentrating ore, isolating metal, and purification.
Classification of materials
This lesson highlights the classification of the engineering materials and their processing techniques. The engineering materials can broadly be classified as:
a) Ferrous Metals
b) Non-ferrous Metals (aluminum, magnesium, copper, nickel, titanium)
c) Plastics (thermoplastics, thermosets)
d) Ceramics and Diamond
e) Composite Materials & f) Nano-materials.
The engineering materials are often primarily selected based on their mechanical, physical, chemical and manufacturing properties. The secondary factors to be considered are the cost and availability, appearance, service life and recyclability.
Topic-5-Properties-of-metals. for grade 5pptx
The document discusses the classification of elements into metals, non-metals, and metalloids based on their location on the periodic table. Metals are found on the left side of the periodic table, non-metals are on the right side, and metalloids exhibit properties of both metals and non-metals. Common metal alloys like bronze, steel, brass, sterling silver, white gold, aluminum alloys, and titanium alloys are then described along with their compositions and uses.
Dental casting alloys bhutani/ oral surgery courses
Description :
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Metallurgy and its proospect BBA DU Finance
This document provides an overview of metallurgy and its history. It discusses the extraction and processing of metals through techniques like mineral processing, pyrometallurgy, hydrometallurgy, and physical metallurgy. The history of metallurgy is traced from early use of gold and copper thousands of years ago to modern developments in steel production and welding. Key events highlighted include the development of bronze and iron working and innovations in the 18th-19th centuries that enabled large-scale steel production.
Dental casting alloys part i
This document discusses dental casting alloys and their composition. It begins by defining metals, metalloids, and alloys. It then discusses the atomic structure and crystal lattices of metals, as well as their physical properties related to solidification, crystallization, density, conductivity, and strength. Noble metals like gold, platinum, palladium, and base metals like cobalt, nickel, chromium commonly used in dental alloys are introduced along with their properties. Microstructure, grain size and their effect on mechanical properties are also covered. In conclusion, various metals and their roles in developing desirable properties in dental casting alloys are summarized.
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M NM M Review and Practice metals nonmetals etc ppt.ppt
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- 3. KEERTHY.B.S REG. NO - 182 14 341 008 OPTIONAL SUBJECT- PHYSICAL SCIENCE
- 4. METALS AND THEIR CHARACTERISTICS TOPIC METALS AND THEIR CHARACTERISTICS
- 5. METALS ARE HARD AND SHINY IN APPEARANCE
- 6. MALLEABILITY DUCTILITY HARDNESS METALLIC LUSTURE CONDUCTIVITY SONORITY
- 7. METALS CAN BE BEATEN INTO THIN SHEETS BY HAMMERING.THIS PROPERTY IS KNOWN AS MALLEABILITY.
- 8. METALS CAN BE DRAWN INTO THIN WIRES.THIS PROPERTY IS KNOWN AS DUCTILTY.
- 9. FRESHLY CUT SURFACES OF METALS HAVE A SHINY APPEARANCE.THIS PROPERTY IS KNOWN AS METALLIC LUSTURE.
- 10. METALS ARE THERMAL CONDUCTORS. SILVER IS THE BEST THERMAL CONDUCTOR.
- 11. ALL METALS ARE CONDUCTORS OF ELECTRICITY. SILVER IS BEST ELECTRICAL CONDUCTOR.
- 12. THE ABILITY OF METALS TO PRODUCE SOUND WHEN TAPPED WITH A HARD MATERIAL IS KNOWN AS SONORITY.
- 13. HIGH THERMAL CONDUCTIVITY HIGH DENSITY HIGH MELTING POINT HIGH ELECTRICAL CONDUCTIVITY
- 14. TO MAKE ELECTRIC WIRES TO MAKE ALUMINIUM FOILS TO WRAP FOOD MATERIALS TO MAKE UTENSILS TO MAKE FARMING TOOLS TO MAKE BELLS USED IN PLACES OF WORSHIP