Q52 of 61 Page 4

Compare the properties of metals and nonmetals with respect to malleability, ductility and conductivity


MetalsNonmetals
1. malleable – gives sheets on hammeringBrittle – no sheets can be obtained
2. ductile – can be transformation into wiresNot ductile – no wires can be obtained
3. good conductors of heat and electricityBad conductors of heat and electricity

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50 Which one of the following materials is most likely to be corroded? a. a wooden plank              b. a steel chair c. an exposed iron rod       d. an iron rod coated with oil. 51 What is corrosion? What are the ways to retard this process? 53 Taking the examples of magnesium and sulphur explain how metals and non-metals produce oxides with different characteristics. 54 Give some differences with examples between metals and non-metals with reference to their physical properties. Give one exception in each case.