Podcast
Questions and Answers
What is the definition of reflectivity?
What is the definition of reflectivity?
- The amount of light scattered by a material
- The amount of light reflected from a material (correct)
- The amount of light emitted by a material
- The amount of light absorbed by a material
What is thermal conductivity?
What is thermal conductivity?
- The ability of a material to reflect light
- The ability of a material to absorb sound
- The ability of a material to conduct electricity
- The ability of a material to conduct heat (correct)
Which type of solid has a sharp melting point?
Which type of solid has a sharp melting point?
- Both crystalline and amorphous solids
- Amorphous solids
- Crystalline solids (correct)
- Neither crystalline nor amorphous solids
What is the difference between translucent and opaque materials?
What is the difference between translucent and opaque materials?
What is hardness?
What is hardness?
What are mechanical properties?
What are mechanical properties?
What did Rutherford's Gold Foil Experiment establish?
What did Rutherford's Gold Foil Experiment establish?
Which test can be used to measure hardness?
Which test can be used to measure hardness?
What happens to the toughness of a material when it is heated?
What happens to the toughness of a material when it is heated?
What is the difference between good conductors of heat and electricity and bad conductors?
What is the difference between good conductors of heat and electricity and bad conductors?
Flashcards
Reflectivity
Reflectivity
The amount of light reflected from a material's surface.
Thermal Conductivity
Thermal Conductivity
A material's capacity to conduct or transfer heat.
Crystalline Solid Melting Point
Crystalline Solid Melting Point
Solid with a distinct, specific temperature at which it melts.
Translucent vs. Opaque
Translucent vs. Opaque
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Hardness
Hardness
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Mechanical Properties
Mechanical Properties
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Rutherford's Gold Foil Experiment
Rutherford's Gold Foil Experiment
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Vickers Test
Vickers Test
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Toughness and Heat
Toughness and Heat
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Good vs Bad Conductors
Good vs Bad Conductors
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Study Notes
- Atomic structure consists of a nucleus with protons and neutrons, surrounded by electrons.
- Reflectivity is the amount of light reflected from a material.
- Thermal stress occurs when a body can't expand or contract freely due to temperature changes.
- Melting point is the temperature where a solid transitions to a liquid.
- Crystalline solids have a sharp melting point, while amorphous solids soften gradually.
- Toughness is the ability of a material to absorb energy without rupturing.
- Hardness is the ability of a metal to cut another metal.
- Hardness includes resistance to wear, scratching, deformation, and machinability.
- Hardness can be measured through various tests like Brinell, Rockwell, Vickers, and Shore.
- The toughness of a material decreases when it is heated.
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