5.3 Metal mixtures
Authored by Kiki Sri Nurhayati
Science
7th Grade
Used 32+ times
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13 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
What is an alloy?
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
Which properties of aluminium make it useful for building planes?
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
Why is an alloy of aluminium used for making planes instead of pure aluminium?
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
Pure gold is 24 carat gold. What does this mean?
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
Explain the difference between the purity of 18 carat gold and 24 carat gold.
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6.
OPEN ENDED QUESTION
3 mins • 1 pt
Why do we not use pure silver for our coins?
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7.
OPEN ENDED QUESTION
3 mins • 1 pt
Why do we use pure copper for our coins?
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