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What characteristic of materials is highlighted by the statement "Materials with a shiny or lustrous appearance are generally metals"?
- a)Density
- b)Conductivity
- c)Ductility
- d)Appearance
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
What characteristic of materials is highlighted by the statement "...
The statement emphasizes the visual appearance as a distinguishing feature of metals. Metals like iron, copper, aluminum, and gold are known for their shiny or lustrous appearance, which is often most noticeable on freshly cut surfaces due to their reflective nature. This characteristic is a result of the way light interacts with the metallic structure, leading to the perception of shine or luster.
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What characteristic of materials is highlighted by the statement "...
Understanding Material Characteristics
The statement “Materials with a shiny or lustrous appearance are generally metals” emphasizes the characteristic of appearance in materials, particularly focusing on how they reflect light.
What is Lustrous Appearance?
- Lustrous materials are those that have a shiny surface, reflecting light effectively.
- This quality is commonly observed in metals, such as gold, silver, and aluminum.
Why Metals Have a Shiny Appearance?
- Metals possess a unique electron structure that allows them to reflect light.
- The free electrons in metals can move easily, causing them to interact with light in a way that makes them appear shiny.
Comparison with Non-Metals
- Non-metals typically do not exhibit a shiny appearance; instead, they may appear dull or matte.
- For example, materials like rubber, wood, and plastic do not reflect light as effectively as metals.
Conclusion
- The statement highlights that luster is a key identifying characteristic of metals, distinguishing them from non-metals.
- Thus, the correct answer is option 'D', which pertains to the appearance of materials.
The statement “Materials with a shiny or lustrous appearance are generally metals” emphasizes the characteristic of appearance in materials, particularly focusing on how they reflect light.
What is Lustrous Appearance?
- Lustrous materials are those that have a shiny surface, reflecting light effectively.
- This quality is commonly observed in metals, such as gold, silver, and aluminum.
Why Metals Have a Shiny Appearance?
- Metals possess a unique electron structure that allows them to reflect light.
- The free electrons in metals can move easily, causing them to interact with light in a way that makes them appear shiny.
Comparison with Non-Metals
- Non-metals typically do not exhibit a shiny appearance; instead, they may appear dull or matte.
- For example, materials like rubber, wood, and plastic do not reflect light as effectively as metals.
Conclusion
- The statement highlights that luster is a key identifying characteristic of metals, distinguishing them from non-metals.
- Thus, the correct answer is option 'D', which pertains to the appearance of materials.
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What characteristic of materials is highlighted by the statement "Materials with a shiny or lustrous appearance are generally metals"?a)Densityb)Conductivityc)Ductilityd)AppearanceCorrect answer is option 'D'. Can you explain this answer?
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