9.1. Properties of metals
A subsection of Chemistry, 0620, through 9. Metals
Listing 10 of 101 questions
Metals have characteristic properties. Write about the properties of metals. In your answer ● refer to the physical properties which are characteristic of metals, ● refer to the chemical properties which are characteristic of metals, ● include a word equation to show a chemical reaction of a metal. The table shows how easy it is to reduce four metal oxides. metal oxide ease of reduction calcium oxide not reduced by carbon at 1600 °C magnesium oxide reduced by carbon at 1600 °C nickel(oxide reduced by carbon at 350 °C zinc oxide reduced by carbon at 850 °C Use this information to put the metals in order of their reactivity. Put the least reactive metal first. least reactive most reactive Uranium is a radioactive metal which has several isotopes. What is the meaning of the term isotopes? Give the main use of the isotope 235U.
0620_m17_qp_32
THEORY
2017
Paper 3, Variant 2
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This question is about metals. Magnesium is manufactured by the electrolysis of molten magnesium chloride. unreactive gas in unreactive gas out anode (+) cathode (–) molten magnesium molten magnesium chloride What information in the diagram shows that molten magnesium is less dense than molten magnesiumchloride? One of the products of this electrolysis is magnesium. State the name of the other product. An unreactive gas is blown over the surface of the molten magnesium. Suggest why an unreactive gas and not air is blown over the surface of the molten magnesium. Suggest the name of an unreactive gas which could be used. The table shows some properties of four metals. metal density in g / cm3 melting point in °C relative strength relative electrical conductivity aluminium 2.7 cobalt 8.9 gallium 5.9 nickel 8.9 Answer these questions using only the information shown in the table. Which metal is most suitable to make the body of an aircraft? Give a reason for your answer. Which metal is most suitable to use for overhead power cables? Give a reason for your answer. Which two metals in the table are transition elements? and Give two properties of transition elements which are not shown by GroupI elements.  Cobalt is added to iron to make steel alloys. What is meant by the term alloy? Give one reason why alloys are used instead of pure metals. 
0620_m18_qp_32
THEORY
2018
Paper 3, Variant 2
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Questions Discovered
101