ࡱ;  R F7׻CompObj\WordDocumenth#ObjectPool7׻7׻  FMicrosoft Word 6.0 DocumentNB6WWord.Document.6;  Oh+'0& , 8 DPX `l LScience F:Applications:Microsoft Office:Microsoft Word 6:Templates:chem labLAB: TITLE OF LABsciencescience'@Ի@vֻ@ h)׻ܥhO eh# 4V!V!V!V!V!n! x!"V!<"V!!!!!!!!"""""""&"X"~<" ! !6!!!<"! !!!!!! ! !"! !6 !"!D!Lab: Relative Solubilities and Conductivities of Various Compounds in Water  Introduction The purpose of this lab is to determine 1) if there is a similarity in the solubility and the conductivity of those compounds that had high melting points and boiling points and 2) if these properties differ for compounds with low melting points and boiling points MATERIALS: well plate KCl small test tubes C6H14 (hexane) small glass stirring rods NH3 (ammonia water) medicine droppers C2H5OH (alcohol) NaBr microconductivity apparatus CaCl2 Procedure PART I 1. Obtain a clean dry well plate and a stirring rod. 2. Place a micro spatula amount of sodium bromide,NaBr, calcium chloride, CaCl2, and potassium chloride, KCl in separate wells (1,2,3). Place 20 drops of ammonia, hexane, alcohol in 3 separate small test tubes. 3. Add 30 drops of distilled water to wells 1 - 3. Use a stirring rod to mix each well, being sure to clean it after each well before proceeding to the next. 4. To the test tubes, add 50 drops of water and flick the test tube to mix. 5. Note in the data table which materials are soluble in water. We also wish to test I2 as well. Because it is difficult to work with iodine, its solubility will not be determined by experiment. It is simply noted in the data table that iodine is insoluble in water. 6. Save the solutions in wells 1, 2, 3 for Part II of the experiment. The test tubes may be emptied. PART II 1. Place 20 drops of ammonia in well 4, 20 drops of hexane in well 5, 20 drops of alcohol in well 6, and 20 drops of distilled water in well 7. 2. Test each solution and/or liquid for conductivity by placing a micro conductivity apparatus into each well. Be sure to clean the electrodes between wells. 3. Iodine cannot be handled safely. So again we will simply note that iodine is a nonconductor. 4. CLEAN UP ALL EQUIPMENT. 5. Complete this lab by determining the melting points and boiling points of all the chemicals by looking them up in the Handbook of Chemistry and Physics. Data COM- POUNDMELTING POINTBOILING POINTSOLUBLEIN- SOLUBLEGOODFAIRNON-CONDUCTNH3NaBrCaCl2KClI2C6H14wateralcohol Analysis 1. Compounds of high melting points are made up of what combination of elements? 2. Which type of combination (metal/nonmetal or nonmetal/nonmetal) resultsin stronger forces holding it together? (see question 7) 3. What combination of elements had good solubility? 4. What combination of elements showed good conductivity? 5. What combination showed poor or no conductivity? 6. True or false? a. Metal/nonmetal compounds are held together by a strong force. These compounds show similar trends in solubility and conductivity. b. Nonmetal/nonmetal compounds show properties quite different from them. 7. List three properties easily determined in the lab that could be used to identify a compound of: a. a metal and a non-metal. b. 2 non-metals. Write a conclusion. BONDING Name: _______________________ Partner #1: _______________________ Partner #2: _______________________ Acton-Boxborough Regional High School Due Date: ______________________ Acton-Boxborough Regional High School  |HH(EG(HH(d'`|HH(EG(HH(d'` |HH(EG(HH(d'`00&a0`0(00&00&00&00&ࡱ; SummaryInformation(@Microsoft Word 6.0.17; VWXYZg0134E    ] ^ x y V{guU]cU]c]^U]]h]uD]a UZ]c( UZ]c(8WYghrs~,23>EF{O:HE E `      " 0 8 $$$,$$$$$$$$$$$$$,$,$,$$h*8 < D I N Z [ _ ` a b c d e f g l m n o p q r s t z { | } ~  l A HO $) $$,$,l A HO $( " #   N O a b 67 0UV$$$$$$$$$$$$$$$$$$$$$$$$$$T 0 !l h !s0h !sh%$hK@Normal]a "A@"Default Paragraph Font @ Header ! @ Footer !*O"* Chem HeaderL UZ]cF XmFH  qg 8  WY3 w7Dscience9Science F:Teacher Folders:Murphree:SOLUBILTY/CONDUCTIVITY@   >VMTimes New Roman Symbol MArial MTimesMNew Century Schlbk"1h6&Ϊ6&ɪ6&!~KScience F:Applications:Microsoft Office:Microsoft Word 6:Templates:chem labLAB: TITLE OF LABsciencescienceࡱ;