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Questions and Answers
What is the appearance of a pure metal surface when wiped with sandpaper?
What is the appearance of a pure metal surface when wiped with sandpaper?
- Rough
- Shiny (correct)
- Dull
- Smooth
Which of the following metals is NOT typically shiny when its surface is pure?
Which of the following metals is NOT typically shiny when its surface is pure?
- Copper
- Magnesium
- Lead (correct)
- Iron
How can you classify objects based on their physical properties?
How can you classify objects based on their physical properties?
- By comparing their physical properties (correct)
- By their color
- By their weight
- By their melting point
Which metal exhibited metallic lustre after being wiped with sandpaper?
Which metal exhibited metallic lustre after being wiped with sandpaper?
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What happens to a piece of sodium metal when inserted into filter paper?
What happens to a piece of sodium metal when inserted into filter paper?
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Why should sodium metal be handled with caution and not touched with hands?
Why should sodium metal be handled with caution and not touched with hands?
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