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Questions and Answers
Which of the following physical properties is characteristic of metals?
Which of the following physical properties is characteristic of metals?
What is a characteristic of non-metals?
What is a characteristic of non-metals?
Which metal is an exception to the general rule that metals have high melting and boiling points?
Which metal is an exception to the general rule that metals have high melting and boiling points?
What is a characteristic of metals that is not typically found in non-metals?
What is a characteristic of metals that is not typically found in non-metals?
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Which non-metal is an exception to the general rule that non-metals have low density?
Which non-metal is an exception to the general rule that non-metals have low density?
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What is a physical property of metals that is related to their ability to produce a ringing sound when struck?
What is a physical property of metals that is related to their ability to produce a ringing sound when struck?
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Study Notes
Physical Properties of Metals
Characteristics:
- Luster: Metals have a shiny appearance
- Malleability: Metals can be pounded into different shapes without breaking
- Ductility: Metals can be stretched into thin wires without breaking
- Conductivity: Metals are good conductors of heat and electricity
- High Density: Metals are generally dense, meaning they have a high mass per unit volume
- High Melting and Boiling Points: Metals have high melting and boiling points, indicating strong bonds between atoms
- Sonorous: Metals produce a ringing sound when struck
Exceptions:
- Mercury is a liquid at room temperature, despite being a metal
- Some metals, like alkali metals, have low melting and boiling points
Physical Properties of Non-Metals
Characteristics:
- Dull Appearance: Non-metals often have a dull appearance
- Brittleness: Non-metals are brittle and break easily when subjected to pressure
- Poor Conductivity: Non-metals are poor conductors of heat and electricity
- Low Density: Non-metals are generally less dense than metals
- Low Melting and Boiling Points: Non-metals have low melting and boiling points, indicating weak bonds between atoms
- Non-Sonorous: Non-metals do not produce a ringing sound when struck
Exceptions:
- Carbon, in its diamond form, has a high density and is extremely hard
- Some non-metals, like iodine, have a shiny appearance
Physical Properties of Metals
- Metals have a shiny appearance due to their luster.
- They can be pounded into different shapes without breaking, exhibiting malleability.
- Metals can be stretched into thin wires without breaking, demonstrating ductility.
- They are good conductors of heat and electricity, making them suitable for various applications.
- Metals have a high mass per unit volume, giving them a high density.
- They have high melting and boiling points, indicating strong bonds between atoms.
- When struck, metals produce a ringing sound, known as sonorous.
Exceptions in Metals
- Mercury is a liquid at room temperature, unlike other metals.
- Alkali metals have low melting and boiling points, contrary to the typical metal characteristics.
Physical Properties of Non-Metals
- Non-metals often have a dull appearance, lacking luster.
- They are brittle and break easily when subjected to pressure.
- Non-metals are poor conductors of heat and electricity, making them less suitable for certain applications.
- They have a lower mass per unit volume, resulting in a lower density.
- Non-metals have low melting and boiling points, indicating weak bonds between atoms.
- When struck, non-metals do not produce a ringing sound, lacking sonorousness.
Exceptions in Non-Metals
- Diamond, a form of carbon, has a high density and is extremely hard.
- Iodine, a non-metal, has a shiny appearance, unlike other non-metals.
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Description
This quiz covers the characteristics of metals, including their luster, malleability, ductility, conductivity, density, and melting and boiling points.
