Diagnosis test: Edexcel CORE Science Metal ores and alloys (15 marks) – What is an ore? (circle the correct answer) A metal mixed with carbon. A rock with a high percentage of a compound. Rocks that contain a high percentage of pure metal particles. A metal combined with oxygen. mark) Put the following metals in order of their reactivity, identify the most and least reactive. gold iron copper sodium magnesium aluminium Most reactive sodium magnesium aluminium iron copper gold Least reactive (3 mark) What is the reactivity series and describe how the reactivity of a metal determines the method of extraction? The reactivity series shows the relative reactivity of different metals in relation to each other and carbon. Metals above carbon must be extracted using electrolysis. Metals below carbon can be extracted by reduction using carbon, coke, or charcoal. (3 two ways in which metals can be extracted from their ores. Heating with carbon (reduction) and by electrolysis (2 marks)
Diagnosis test: Edexcel CORE Science – Metal ores and alloys (15 marks) What is an ore? (circle the correct answer) A metal mixed with carbon. A rock with a high percentage of a compound. Rocks that contain a high percentage of pure metal particles. A metal combined with oxygen. mark) Put the following metals in order of their reactivity, identify the most and least reactive. gold iron copper sodium magnesium aluminium Most reactive sodium magnesium aluminium iron copper gold Least reactive (3 mark) What is the reactivity series and describe how the reactivity of a metal determines the method of extraction? The reactivity series shows the relative reactivity of different metals in relation to each other and carbon. Metals above carbon must be extracted using electrolysis. Metals below carbon can be extracted by reduction using carbon, coke, or charcoal. (3 two ways in which metals can be extracted from their ores. Heating with carbon (reduction) and by electrolysis (2 marks)