Chemistry I LAB Activity Series of Metals Some of the chemicals in this lab are toxic so assume that they all are. One will turn your skin black on contact. If you get any of these chemicals on your hands, wash it off immediately and tell your teacher. Wear goggles at ALL TIMES over your eyes, not your forehead or neck. Introduction: In this lab, you will be attempting to react a metal with several solutions. Each of these will be a single replacement reaction. Only half of the reactions will occur. By recording which reactions occur and which don't, you will be able to figure out their relative reactivity (activity series). For example, you have 3 metals; A, B, and C and their salt solutions; ANO3, BNO3, and CNO3. You put each metal in the other two solutions, you get the following results: ANO3 BNO3 CNO3 A X NR NR B Rxn X Rxn C Rxn NR X Where it says NR, there was no reaction. Where it says Rxn, there was a reaction. Where there is an X, the test was not done because metal A doesn't need to be tested on solution A. Since metal B reacted with both of the other solutions, it is the most reactive. Metal A didn't react with either solution and is therefore the least reactive. The activity series goes B, C, A from most to least. You will be doing the activity series for Mg, Zn, Fe, Cu, and Ag. You should use the data chart on the back of your lab report sheet just like the above chart was used. Procedure: 1. Obtain a clean and dry 24 well plate. If yours needs cleaning, be sure to do that before you begin. 2. Test one metal at a time by putting about 20 drops of the other 4 solutions in separate wells. Be sure the metal samples are clean and shiny. Use sand paper to clean their surfaces if necessary. Place them into the solutions. Wait at least 2 minutes to see if a reaction occurs. Evidence may include bubbles, metal changing color, solution changing color, or the size or shape of the metal changing. Sometimes when the metal gets wet, it changes color or appearance. Be careful not to mistake this for a reaction. 3. Repeat this procedure until you have tested the 4 metals. The fifth metal doesn't need to be tested as its solution has been tested against all of the metals (and it's expensive). 4. Record the results of each test in your data table using the same abbreviations as in the example. 5. Dump the chemical waste into the waste container. Rinse the metal pieces at your sink, dry them thoroughly, and put them back in their proper location. Clean your 24 well plate completely to be sure that no residue remains in the wells. Chemistry I LAB Activity Series of Metals REPORT SHEET 1. Name___________________Date________ Using your lab results, rank the metals in a column format from most reactive at the top to the least reactive at the bottom. most reactive: _______________ _______________ _______________ _______________ least reactive: _______________ 2. How does your activity series compare with the actual one given to you by Mr. Scott? (Be specific) 3. Write a balanced equation for each of the reactions that occurred in your lab. (Hint: There should be 10 reactions) _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ If you were doing a lab final and you thought that you had a solution with zinc in it, how could you test this idea using single displacement reactions? Explain: In each of the boxes below, write RXN or NR according to your lab results. INCLUDE a brief description of the evidence for the reaction if you write RXN in the box. MgNO3 ZnNO3 Mg Zn Fe Cu Ag FeCl2 CuSO4 Ag NO3 X X X X X