Alloys and Their Properties
Chemistry ⇒ Metals and Non-metals
Alloys and Their Properties starts at 9 and continues till grade 12.
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See sample questions for grade 11
A student is given two samples: one of pure copper and one of brass. The student notices that brass is harder and more resistant to corrosion. Explain why this is the case.
Describe how the process of alloying can affect the malleability of a metal.
Describe one reason why alloys are used instead of pure metals in making coins.
Describe the difference between a substitutional alloy and an interstitial alloy.
Explain why adding carbon to iron produces steel with different properties.
Explain why alloys are often more resistant to corrosion than pure metals.
Explain why pure gold is not used for making jewelry.
A student is given two samples: one of pure copper and one of brass. The student notices that brass is harder and more resistant to corrosion. Explain why this is the case.
Which of the following alloys contains lead?
(1) Solder
(2) Bronze
(3) Duralumin
(4) Steel
Which of the following alloys is used in dental fillings?
(1) Solder
(2) Amalgam
(3) Bronze
(4) Brass
Which of the following is a property of alloys compared to pure metals?
(1) Lower strength
(2) Higher corrosion resistance
(3) Lower hardness
(4) Lower density
Which of the following is a property of steel that makes it suitable for construction?
(1) High electrical conductivity
(2) High tensile strength
(3) Low melting point
(4) High malleability
Bronze is an alloy of copper and ________.
Fill in the blank: Stainless steel is an alloy of iron, carbon, and ________.
Fill in the blank: The alloy nichrome, used in heating elements, is made from nickel and ________.
Fill in the blank: The alloy solder is mainly composed of lead and ________.
State whether the following statement is true or false: Alloying always increases the melting point of a metal.
State whether the following statement is true or false: Alloys are always harder than their constituent metals.
State whether the following statement is true or false: Alloys can be made by melting and mixing metals together.
State whether the following statement is true or false: Alloys can only be made from metals.
