![]() ![]() These elements will only react with compounds when the metal in the compound is more stable (therefore less reactive) than it is. Transition elements are more stable in their elemental form, and therefore less reactive. If they did react, that would cause them to change to their elemental form, which is unstable. Once these metals are bonded to an anion in a compound, they will not react with elements in single replacement reactions. These metals tend to be found as compounds as they are more stable this way. Many times, these metals are alkali metals or alkaline earth metals. Metals that are highly reactive are found at the top of the activity series. In this lab, you will make observations about the reactivity of different metals and use this information to create an activity series that can be used to predict when chemical reactions will occur. How can scientists predict when a reaction will or will not occur? One way to determine the probability of a reaction moving forward is to use an activity series. Students should rotate through all six stations.Ī chemical reaction does not occur every time two chemicals interact with each other however, often times a reaction does occur. Give students 5-10 minutes per station to complete the activity.Chlorides or nitrates may be used in place of the sulfates listed.Each table will need at least 36 pieces/samples of each metal. Iron filings may be used as the iron samples, and mossy zinc or pieces of zinc foil or zinc sheet can be cut for this experiment. Copper wire may be used and cut in to small pieces. Magnesium ribbon can be cut in to very small pieces and used for this lab for the magnesium samples.750 mL of solution should be enough for 36 lab groups to complete the activity.Each lab table should have a different solution, but the same four metal samples. The material list is designed for each lab table to be used as a different station with a different solution. ![]() When diluting acids, always add acid to water.When working with acids, if any solution gets on students’ skin, they should immediately alert you and thoroughly flush their skin with water.When students complete the lab, instruct them how to clean up their materials and dispose of any chemicals.Students should wash their hands thoroughly before leaving the lab.Always wear safety goggles when handling chemicals in the lab.Small samples of each metal (copper, magnesium, iron, and zinc).750 mL of one of the following solutions: 1.0 M KNO₃, 1.0 M MgSO 4, 1.0 M FeSO 4, 1.0 M CuSO 4, 1.0 M AgNO 3, 1.0 M ZnSO 4.Lesson: 60 minutes (additional time outside of class also needed) Materials (Per lab table) This lab supports students’ understanding of Predict whether or not a chemical reaction will occur.Determine which metals are reactive and which are not as reactive.Grade Levelīy the end of this lab, students should be able to In this lab, students will create an activity series of metals and predict whether or not single replacement reactions are likely to occur. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |