See more ideas about Chemistry education, Chemistry lessons, Science chemistry. The iron nail reacts with copper sulphate displace copper and form iron sulphate . II. reactivity series during these experiments. After inserting 2. (c) P displaces Q 1. To determine the position of Element X in the reactivity series. Al2(SO4)3 solution in each test tube. Question 5: What is the colour of Al2(SO4)3 solution? (d) rough and granular. ZnSO4 solution in each test tube. (a) all the four solutions changed. A more reactive metal will displace a less reactive metal from solution. > Non-Metals: The atoms of non-metals gains or shares electrons to form negative ions called anions, the atoms of non-metals if readily gains electrons it is said to be more reactive. When a few crystals of copper sulphate are dissolved Why displacement reaction? Watch this video to show you how to work out the reactivity Series of the metals. This is a two-lesson bundle that guides students through planning an investigation into the reactivity of different metals and then carrying out their experiment. It is used to summarize information about the reactions of metals with acids and water, single displacement reactions and the extraction of metals from their ores (c) Equilibrium is seen. Exception: Copper reacts with concentrated nitric acid, the nitrate ions oxidize copper. It is found that a grey deposit forms on the zinc but not on the copper. (d) Both are more reactive than Fe. Answer: Some: Sodium: Na: Light: Lithium: Li: Color (c) CuSO4 (aq.) metal in experiments The blue colour of the crystals is due to these five water molecules. 7. When an aluminium strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube, the change observed is The reactivity series In a reactivity series, the most reactive element is placed at the top and the least reactive element at the bottom. (b) the copper strip became thinner Answer: Fe(s) + CuSO4(aq) —> FeSO4(aq) + Cu(s). (a) add Zn in test tube A and B Add ZnSO4 solution in each test tube. 11. After 10 minutes, it was observed that blue colour of the solution changes and a layer gets deposited on iron filings. 10. Which of the following reaction will not occur? (b) solution of ZnSO4, CuSO4 and Al2(SO4)3 changed and that of FeSO4 did not change. In case of halogens, more reactive non-metal will displace the less reactive one from its place. Which group of students recorded the observations correctly? (a) copper and zinc (b) Zinc is more reactive than Cu and Fe. Chlorine is toxic [1]. A student performed the following four experiments: The decreasing order of reactivity for these metals follow the order: Observe the changes carefully as few reactions may occur slowly. Four students were assigned separately the experiment of interaction of an iron nail with a solution of copper sulphate. Question 5: Wash the test tubes after every set of observations of interaction of a particular metal with the four salt solution. What is the right observation? Why does the colour of copper sulphate solution change, when an iron nail is dipped in it? The test tubes containing copper sulphate solution and ferrous sulphate solution could be the tubes: 31. Why? Take four clean test tubes. Precautions (c) iron and aluminium Conclusion: Al, Zn and Fe metals are more reactive than Cu. 31. Building the reactivity series During a reaction, metals lose electrons to form positive ions. (d) All tests will help in identifying the solutions. Use very small pieces of metal every time. Each group recorded the observations as [ given below in the table. (b) hard and flaky. Reactivity of elements > Reaction of Metals with Salt Solution The atoms react due to its tendency to lose, gain or share electrons. Watch out for the latest updates on NCERT Books, NCERT Solutions, CBSE Sample Papers, RS Aggarwal Solutions and all resources that we share regularly on CBSETuts.com for K12 Students. Clean the metals by rubbing them with a piece of sand paper before dipping them in the salt solutions. 27. (d) Iron spoon will not show any change. (b) aluminium and copper Strips of copper, iron, zinc and aluminium were introduced, each metal in a different test tube. Four students A, B, C and D noted the initial colour of the solutions in test tubes I. II, III and IV. Fe readily loses electrons as compared to copper. (b) Test tube with AgNO3 solution Iron + Zinc sulphate —> No reaction. (b) It shows thermite reaction and heat is evolved. Dip a small, clean piece of aluminium, zinc, iron and copper metals in test tubes A, B, C and D respectively. 15. CBSE Class 10 Science Practical Skills – Reactivity Series. The colour of zinc sulphate solution is What will happen if Fe metal is added to ZnSO4 solution? The reactivity series of metals is How can you test that a given sample contains water or not? 32. > The arrangement of metals in decreasing order of their reactivity is called reactivity series or activity series of metals. Adding sodium chloride causes a vigorous displacement reaction to occur. 21. (c) Iron spoon will get holes in it. (b) Cu is displaced by Zn which is brown in colour. Note: When metals react with nitric acid they do not release hydrogen gas (except magnesium and manganese) because nitric acid acts as a strong oxidizing agent. (b) add more copper sulphate solution Answer: (d) Mg + ZnSO4. (d) light green solution changes to blue. (a) Zinc is most active metal followed by iron and copper. (a) light green to blue Dip small, clean pieces of Al, Zn, Fe and Cu metal in test tubes A, B, C and D respectively. 19. (a) white (a) The solution is blue in the beginning. 2:14 Practical: determine the approximate percentage by volume of oxygen in air using a metal or a non-metal (d) Reactivity series. Answer: 23. From CBSE Science practical to Lab manual, project work, important questions and CBSE lab kit manual, all the information is given in the elaborated form further in this page for Chapter 4 Reactivity Series students. To observe the action of Zn, Fe, Cu and Al metals on the following salt solutions: Arrange Zn, Fe, Cu and A1 metals in the decreasing order of reactivity based on the above result. Conclusion: Al metal is more reactive than Zn metal. (c) Cu is less reactive than Zn. Hence, the arrangement of metals in decreasing reactivity order is In one molecule of copper sulphate, five water molecules are present to form crystal. Answer: (a) Zinc sulphate will become green. Question 6: Answer: (d) blue to yellow. > The order of the metals in the reactivity series can be worked out by using these type of reactions. Do you see any difference in them? 29. In this article, we have discussed a step-by-step procedure to perform CBSE Class 10 Science Practicals experiment Reactivity Series. Mg > Al > Zn > Fe > Cu. (c) the copper strip became thicker 3. > Reaction with Al2(SO4)3 solution: 13. The right pair of metals forming the precipitates is 3. (c) heat zinc and copper strips. Fe is unable to displace Zn from its salt solution, whereas Zn is able to displace Fe from its salt solution, therefore Zn is more reactive than Fe. Al > Zn > Fe > Cu. Iron metal reacts with copper sulphate solution to displace copper and form iron sulphate that is green in colour. The resource is set out as teachers' notes followed by the students' page which presents the task to be investigated. The arrangement of metals in a vertical column in order of their decreasing reactivity downwards is called the reactivity series of metals. Question 2: We can use the reactivity series to make predictions about the reactions of metals. 30. Wash your hands properly after the experiment. Name the least reactive metal among the following: Fe, Zn, Al. Question 10: Add a small strip of Al foil to each of the test tubes. (c) heat the container of reactants (a) I and II (b) I and III (c) smooth and shining I. CuSO4 solution in each test tube. Hence, displacement reaction will occur. It is used to determine the products of single displacement reactions, whereby metal A will replace another metal B in a solution if A is higher in the series. Al is able to displace Fe, Cu and Zn from their salt solutions, therefore Al is most reactive. (b) Fe is less reactive than Al but more reactive than Cu. (d) R displaces Q. The water loses oxygen (is reduced). Black residue would be obtained in test tubes: (b) R is removed from the compound and exists freely. The four students A, B, C and D recorded their observations in the form of a table as given below. The series is based on empirical data on the ability of a metal to displace hydrogen gas from water and acid. When you place iron nail in copper sulphate solution, the reddish brown coating formed on the nail is (c) Cu salt is blue coloured. It is useful to place carbon and hydrogen into the reactivity series because these 2. Cu is unable to displace any metal among Al, Fe and Zn from their salt solutions, therefore Cu is least reactive. (c) blue (d) brown. Students work in You are given two test tubes A and B, with solutions ZnS04 and A12(S04)3, both are colourless. (b) The final solution becomes colourless. (a) yellow and green 11. Reactivity of Metals Experiment. They recorded their observations in the form of table given below: Which student noted the colour change in all the four test tubes correctly? The students have to then write their investigation up - including their equipment list, method and analysis of results. This series of simple experiments illustrates some of the chemical properties of the halogens following an introduction to the physical properties of the Group 17 elements. Why does the following reaction takes place? 4. He added 10 mL of freshly prepared ferrous sulphate solution to each test tube as shown below: 10 mL of freshly prepared iron sulphate was taken in zinc rod in each solution and leaving it undisturbed for two hours, they noted the colour of each solution again. 7. A more reactive metal displaces (pushes out) a less reactive metal from its compound. Answer: Reactivity Series, Redox Reactions and Extraction of Metals. On observing the strip the next day, it was noticed that Question 11: Record your observations. Solutions of FeSO4, ZnSO4, CuSO4 and Al2(SO4)3 solutions were separately taken in four test tubes and some iron nails were placed in each of the solutions. The arrangement of metals in a vertical column in order of their decreasing reactivity downwards is called the reactivity series of metals. Fe(s) + CuSO4(aq) —> FeSO4(aq) + Cu(s). (b) R is displaced by P Place about 5cm depth of the acid in each of the five test tubes; Place a small piece of each of the three metals above. Iron wins as it displaces copper from copper sulphate solution. Name any two metals that are more reactive than iron. (d) Mg + ZnSO4. As Al, Zn and Fe can displace Cu from its salt solution hence, all three are more reactive than Cu. Answer: Theory: The reaction rate or rate of reaction for a reactant or product in a particular reaction is intuitively defined as how fast a reaction takes place. (d) Cu is the least reactive metal and can be displaced by all the metals given. Practical Based Questions PBQs based on every experiment with their answers, covering Previous Years’ Questions, are provided experiments for complete coverage of concepts Web support By performing the experiments, students will know the concept in a better way as they can now view the changes happening in front of their eyes. Question 6: (a) the green solution slowly turns blue. Copper is less reactive than iron and cannot displace iron from iron sulphate solution and there is no colour change. (i) Salt solution CuSO4. If the atom readily loses electron at room temperature it is said to be reactive metal than the metal whose atom does not readily lose electron at the room temperature. (a) Fe displaces copper ions. How would you devise the procedure to show that Mg > Fe > Cu in reactivity series? Metal + Acid —> Metal salt + Hydrogen. Question 3: > For example, iron is less reactive than zinc. 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