9.4. Reactivity series
A subsection of Chemistry, 0620, through 9. Metals
Listing 10 of 452 questions
Many of the elements in the Periodic Table are metals. State one common use for each of the following metals. copper platinum aluminium Lead is a metal in Group IV of the Periodic Table. State one adverse effect of lead on health. Lead has several isotopes. One isotope of lead is 207Pb State the number of protons and neutrons in this isotope of lead. number of protons number of neutrons Sodium is a very reactive metal. A student added a few drops of litmus solution to a large beaker of water. She then dropped a small piece of sodium into the beaker. Describe what the student would observe during the reaction. Complete the word equation for the reaction of sodium with water. sodium + water → + Sodium chloride is formed when sodium burns in chlorine. Sodium chloride is an ionic compound. Complete the following sentences about this reaction using words from the list. electron gains ion loses molecule negative positive proton When sodium burns in chlorine, each sodium atom loses an and becomes a sodium . Each chlorine atom an electron and becomes a ion.
0620_w11_qp_22
THEORY
2011
Paper 2, Variant 2
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Ethanol, C2H5OH, is a member of the alcohol homologous series. Give two characteristics of a homologous series. 1. 2. Draw the structure of ethanol showing all atoms and bonds. One use of ethanol is as a solvent. A pupil studied the reaction of iodine with zinc. She fi rst dissolved a few crystals of iodine in ethanol and recorded the temperature of the solution. The temperature was 18 °C. She then added excess powdered zinc and recorded the temperature again. The new temperature was 37 °C. temperature 18 °C iodine dissolved in ethanol temperature 37 °C excess zinc Is this reaction endothermic or exothermic? Explain your answer. What colour is solid iodine? The equation for the reaction is zinc + iodine → zinc iodide When the reaction is complete, the mixture contains zinc iodide dissolved in ethanol and unreacted zinc powder. Suggest how you can get crystals of zinc iodide from the reaction mixture. The diagram shows the structure of zinc iodide. I – I – I – I – I – I – Zn2+ Zn2+ Zn2+ Zn2+ Zn2+ I – I – I – I – What is the simplest formula for zinc iodide? The list below shows four different types of structure. What type of structure is zinc iodide? Put a ring around the correct answer. giant covalent giant ionic metallic molecular The equation for the reaction of zinc with dilute nitric acid is 4Zn + 10HNO3 → 4Zn(NO3)2 + NH4NO3 + 3H2O Write a word equation for this reaction. Describe a test for ammonium ions. test result
0620_w11_qp_22
THEORY
2011
Paper 2, Variant 2
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Many of the elements in the Periodic Table are metals. State one common use for each of the following metals. copper platinum aluminium Lead is a metal in Group IV of the Periodic Table. State one adverse effect of lead on health. Lead has several isotopes. One isotope of lead is 207Pb State the number of protons and neutrons in this isotope of lead. number of protons number of neutrons Sodium is a very reactive metal. A student added a few drops of litmus solution to a large beaker of water. She then dropped a small piece of sodium into the beaker. Describe what the student would observe during the reaction. Complete the word equation for the reaction of sodium with water. sodium + water → + Sodium chloride is formed when sodium burns in chlorine. Sodium chloride is an ionic compound. Complete the following sentences about this reaction using words from the list. electron gains ion loses molecule negative positive proton When sodium burns in chlorine, each sodium atom loses an and becomes a sodium . Each chlorine atom an electron and becomes a ion.
0620_w11_qp_23
THEORY
2011
Paper 2, Variant 3
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Ethanol, C2H5OH, is a member of the alcohol homologous series. Give two characteristics of a homologous series. 1. 2. Draw the structure of ethanol showing all atoms and bonds. One use of ethanol is as a solvent. A pupil studied the reaction of iodine with zinc. She fi rst dissolved a few crystals of iodine in ethanol and recorded the temperature of the solution. The temperature was 18 °C. She then added excess powdered zinc and recorded the temperature again. The new temperature was 37 °C. temperature 18 °C iodine dissolved in ethanol temperature 37 °C excess zinc Is this reaction endothermic or exothermic? Explain your answer. What colour is solid iodine? The equation for the reaction is zinc + iodine → zinc iodide When the reaction is complete, the mixture contains zinc iodide dissolved in ethanol and unreacted zinc powder. Suggest how you can get crystals of zinc iodide from the reaction mixture. The diagram shows the structure of zinc iodide. I – I – I – I – I – I – Zn2+ Zn2+ Zn2+ Zn2+ Zn2+ I – I – I – I – What is the simplest formula for zinc iodide? The list below shows four different types of structure. What type of structure is zinc iodide? Put a ring around the correct answer. giant covalent giant ionic metallic molecular The equation for the reaction of zinc with dilute nitric acid is 4Zn + 10HNO3 → 4Zn(NO3)2 + NH4NO3 + 3H2O Write a word equation for this reaction. Describe a test for ammonium ions. test result
0620_w11_qp_23
THEORY
2011
Paper 2, Variant 3
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The diagram below shows a kiln used for manufacturing lime. air blown in waste gases mixture of calcium carbonate and coke lime removed The reaction taking place in the kiln is calcium carbonate → calcium oxide + carbon dioxide State the name of a rock which is largely calcium carbonate. Explain why, at the end of the reaction, there is only lime left in the lime kiln. Coke is mainly carbon. Combustion of coke provides the heat for the reaction in the lime kiln. Write a symbol equation for the complete combustion of carbon in oxygen. Complete these sentences using words from the list below. air dioxide harmless hydrogenated limited monoxide poisonous water When carbon burns in a supply of , carbon is formed. This is a colourless gas which has no smell and is . Calcium carbonate reacts with hydrochloric acid to form carbon dioxide. Complete the word equation for this reaction. calcium carbonate carbon dioxide + + + → hydrochloric acid The speed of reaction of calcium carbonate with hydrochloric acid can be found using the apparatus shown below. cotton wool top pan balance hydrochloric acid small pieces of calcium carbonate Suggest how this apparatus can be used to fi nd the speed of this reaction. State how the speed of this reaction changes when the concentration of acid is increased, larger pieces of calcium carbonate are used, the temperature is increased.
0620_w12_qp_22
THEORY
2012
Paper 2, Variant 2
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Questions Discovered
452