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 10
A student is given two samples: one of pure iron and one of stainless steel. Which sample is more likely to rust when exposed to moisture?
A wire made of pure copper and a wire made of brass are tested for electrical conductivity. Which wire will conduct electricity better?
Brass is an alloy of which two metals?
Describe how the arrangement of atoms in an alloy differs from that in a pure metal.
Explain why alloys are less malleable than pure metals.
Explain why alloys often have lower electrical conductivity than pure metals.
Explain why solder is used to join electrical wires.
Name the alloy used in dental fillings.
State one difference between an alloy and a compound.
State one reason why gold is alloyed with copper or silver to make jewellery.
Which property of alloys makes them more useful than pure metals for making tools and machinery?
Which property of stainless steel makes it suitable for making kitchen utensils?
A manufacturer wants to design a lightweight, corrosion-resistant alloy for use in marine environments. Which combination of metals would be most suitable and why?
Consider the following scenario: A bridge is constructed using an alloy that contains iron, chromium, and nickel. After several years, the bridge shows minimal signs of rusting. Explain which property of the alloy is responsible for this and name the alloy.
Describe the difference between interstitial and substitutional alloys, giving one example of each.
Explain how the addition of carbon to iron changes the properties of the resulting alloy, and why this is important for its use in construction.
Explain why some alloys, such as shape memory alloys, are used in medical devices. Give one example of such an alloy.
