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Lesson: Uses of Metals

Worksheet • 11 Questions

Q1:

Which of the following is not a potential advantage of steel over aluminum?

  • ALower density
  • BHigher hardness
  • CLower cost
  • DHigher melting point
  • EHigher strength

Q2:

Which one of these elements would you not find in a mobile phone?

  • AUranium
  • BGold
  • CSilicon
  • DCopper
  • EAluminum

Q3:

Metals may be used to transfer thermal energy in heating systems.

Which physical property is most important in the selection of a metal for heating applications?

  • AThermal conductivity
  • BDuctility
  • CElectrical conductivity
  • DStrength
  • EMelting point

What metal is most suitable for use in small-scale heating applications?

  • ACopper
  • BTin
  • CIron
  • DSilver
  • EAluminum

Q4:

Although steel is sometimes used in place of aluminum in automobiles, aluminum is strongly preferred in aircraft. Which property is most responsible for the difference in the use of metals in these applications?

  • ADensity
  • BMalleability
  • CCost
  • DElectrical conductivity
  • EStrength

Q5:

The uses of tin, iron, aluminum, and copper partly depend on their reactivities. Using the elemental symbols, arrange these metals in order of increasing reactivity.

  • A C u < S n < F e < A l
  • B A l < C u < F e < S n
  • C C u < A l < S n < F e
  • D F e < S n < C u < A l
  • E A l < F e < C u < S n

Q6:

Which of the following is not a potential disadvantage of lead relative to tin?

  • ALower reactivity
  • BHigher density
  • CLower strength
  • DHigher toxicity

Q7:

Which of the following is a major advantage of copper over steel when used as a roofing material?

  • AHigher corrosion resistance
  • BHigher strength
  • CHigher thermal conductivity
  • DHigher melting point
  • ELower density

Q8:

Which of the following values is generally higher for aluminum alloys than for copper?

  • AStrength
  • BElectrical conductivity
  • CDensity
  • DMelting point
  • ECost per kilogram

Q9:

For the storage of liquids, cans made from tin are often preferred over those made from steel. What is the main advantage of tin over steel in this application?

  • ALower reactivity
  • BLower cost
  • CLower density
  • DLower thermal conductivity
  • EHigher strength

Q10:

Aluminum and iron have a range of physical and chemical properties. Based on how the two metals differ, which property can be most easily exploited to separate the two metals when they are being recycled?

  • AMagnetism
  • BThermal conductivity
  • CChemical reactivity
  • DDensity
  • EMelting point

Q11:

In ancient Rome, water was frequently transported through pipes made from lead.

Which of the following is not a property of lead that makes it more suitable than other structural metals for this application?

  • AHigh strength
  • BLow reactivity
  • CLow cost
  • DHigh malleability

The use of water pipes made from lead is now usually avoided. Which potential hazard is mostly responsible for this change?

  • AWater contamination due to dissolution of lead
  • BLeaks due to cracking of lead
  • CLeaks due to rusting of lead
  • DLeaks due to melting of lead
  • EWater contamination due to rusting of lead
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