Then allow the melted wax to cool. I then tested this on household items such as corn and pretzels to determine their chemical properties. part c and d? NaOH and AgNO3 Copper(I) After exposure to bright light from my light bulb it turned a dark brown. The basic test to detect the presence of sodium bicarbonate is adding a acidic solution such as HCL (hydrochloric acid) and if there is a release of bubbles (CO2) like in our experiment above then it is present in the solution you are testing. HCI and BTB ii. We have received your request for getting a sample. ash, 3 The flame glowed blue Record observations of this solution in your data table. Bisulfate A _____ is a change in the form of a substance. light blue liqu no First week only $4.99! When the starch was added to sodium hypochlorite NaOCI and potassium iodide KI it turned black. Observations Don't waste time Get a verified expert to help you with Observation of chemical change LabPaq Hire verified writer $35.80 for a 2-page paper During the experiments a few problems were encountered. verif y that it is vinegar, you add a few drops of phenolphthalein. Did either heating or burning produce a chemical change? Aqueous From our experiment we know that when lead nitrate is mixed with potassium iodide it creates a thick yellow substance. No color change, clear. How would you test this material for the presence of sodium bicarbonate?, 5. chemical change? Expert Help. A / A1. bubbles, is it the result of a chemical. bubbled whe Ammonia Your Answer Is Very Helpful For UsThank You A Lot! In this experiment there were fourteen different chemicals of which were mixed with each other twelve different times and I observed there reactions. Describe the similarit ies and/or dif f erences between heating and burning the CuCO . J /B3 magnesium metal. 0000003479 00000 n Is cutting a cake into 8 pieces a chemical or a physical change? data table 1: chemical change observations. Turned a yellow color and more bubbles (more than the carbonated soda) were produced. Record your result in Table 3., b. chemical change The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. Did either heating or burning produce a chemical change? 0000002525 00000 n Course CHEM 181 DL1 The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. For the magnesium, both reactions produced a chemical change, resulting in the metal burning I did not observe any differences between the heating and burning of the zinc. To Data Tables and Observations. Well Chemical #1 (4 drops) Chemical #2 (4 drops) Observations: Chemical Change (Y/N) A1 NaHCO3 Sodium Bicarbonate HCl Hydrochloric Acid When the HCL was added, it bubbled for about 2 seconds then stopped. Describe the similarit ies and/or dif f erences between heating and burning the Automatically turned a bright pink. drops) yes When a soda is poured into a glass and the soda change? it is a red/bn Starch 60 0 obj <> endobj xref 60 54 0000000016 00000 n False, 6. 7. 2. 0000013556 00000 n NaOH and phenolphthalein How might youent cookie brands, four tests result in the B3 Pb(NO32 Lead clear liquid CaCl2 Calcium Devise a simple test to conf irm the presence or Describe how the observations for this reaction using the observations collected in Data Table 2. Describe the similarities and/or differences betburning produce a chemical change? Describe how the oese products: NaCl + H O + CO (g)? What well did this reaction occur in? Jump the queue with a membership plan, get unlimited samples and plagiarism results immediately! This would indicate that the solution you are smelling is not vinegar because it acidic and would not turn pink. HC Data Table 1: Chemical Change Observations. Sukmit You[ Data, Experiment 1 0000029863 00000 n 0000003003 00000 n By clicking "SEND", you agree to our terms of service and privacy policy. Is cutting a cake into 8 pieces a chemical or a physical change? No problem! I believe that this is the result of a chemical change. Question/ Well Number Chemicals Reactions/Observation. Explain your answer. We use cookies to give you the best experience possible. dilution factor for BETA from ALPHA solution = 0.0476 Clear no reaction. Data Table 2: Reaction Observations 0000014765 00000 n Identify whether each statement is an observation or a conclusion. and gas released, then Three of the flavor-samples turn a murky green indicating thelikelihood of acid/base balance. The sample turns pink. The sample turns pink. abbvie patient assistance program Phenolphthalein 0000012055 00000 n Is cutting a cake into 8 pieces a chemical or a physical change? Transcribed Image Text: Data Table 2: Reaction Observations Observations Chemical Well Chemical #1 (4 Chemical Chemical #2 (4 drops) Chemical drops) #1 #2 Change (Yes/No) Appearance Appearance A1 NaHCO HC chemical is chemical is bubbled and yes Sodium Hydrochloric Acid Bicarbonate A2 IKI indicator it is a red/bn Starch cloudy immediate ch yes Pb(NO3}2 Lead() Nitrate KI Potassium clear . Whatbservations for this reaction support your Reaction: Water and carbon dioxide are formed when ethane (C H2 6) is burned in the presence of oxygen. Data Table 1: Chemical Change Observations, Chemical change. clear liquid whitemateria, When I heated the magnesium there was no change but whburning out very quickly en I burned it, it caughtfire and emitted a very bright light before. Describe the similarit ies and/or dif f erences between heating and burning the mossy The only chemical that has a physical change when heated was the mossy zinc. Explain your answer. Institution De Anza College + Absorb in paper towel and expose to sunlight Observation 2: No color change, Data Table 1 Data Table 1: Chemical = Change' Observations Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato Chemical #2 (4 . Add 4 -5 drops of the first solution into the designated spot. product might be made out of from watching the reaction it has with heat, air, or water. Labpaq lab 1: Observation of chemical change lab report . 0000005326 00000 n Be detailed in your observations. Identify the products and the reactants in the reactions. Starch: KI, 3. clear liquid 0000013740 00000 n B4 NaHSO4 Blue Dye #1 C20H1404 This is a chemical reaction because it . 2 No chemical reaction occurred. Did either heating or burning produce a chemical change? Observation 2: Chemical #2 (4 Chemical #2 drops) Appearanca HCI Hydrochloric Acid Create and complete a data table for Part Two of the lab. 0000012812 00000 n bubbled and turned observations collected in Data Table 2. You found a solution that has a faint odor resembling vinegar. d. Clementine Izzy To verify, that it is vinegar, you add a few drops of phenolphthalein. NAHSO4 Burning NaOCI and KI AgNO3 Silver(I) vinegar? Heating chemicals is defined by the process of combustion. C2 flame, then turned into 0000042217 00000 n How might you interpret this result? False, 10. light blue liq (Yes/No) LAB REPORT 4 Observations of Chemical and Physical Change PART 1 - OBSERVATIONS OF CHEMICAL CHANGE No credit will be given for this lab report if the Data section is not completely filled out and if the required photographs are not received. Please please please show all the work Copper(II) Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: . 0000003312 00000 n 24 Hour Services - Have an emergency? Reactions/Observation. You found a sample of a solution that has a fainthat it is vinegar, you add a few drops of phenolpht odor resembling vinegar (an acid). Separates to edges leaving hole in the middle. 3. Yellow thick precipitate What can you assume about the acid/base content of these particular flavors? A chemical reaction occurred. There is no chemical change here, so that only exists a physical change. 0000023384 00000 n Boiling water There was I would expect BTB to turn orange with acidic solutions and blue with base solutions. Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. Reaction . Hydroxide Well Chemical #1 (4 drops) Chemical #2 (4 drops) Observations: Chemical Change (Y/N) A1 NaHCO3 Sodium Bicarbonate HCl Hydrochloric Acid Bubbled and fizzed to the top. How about getting this access immediately? clear liquid Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy. white powder Na2CO3 Sodium The main difference in the two reactions came down to burning it. 0000001895 00000 n Lead() Nitrate How much sodium chloride do you need to prepare 250 mL of an ionic solition of drug A with concentration of 3g/100mL using NS for sterile injection? Color was almost Identical to BTB, dark blue. right side Thank you! How about getting a customized one? True You'll get a detailed solution from a subject matter expert that helps you learn core concepts. To verifythalein. turned black, Glowed red, then turned We have received your request for getting a sample.Please choose the access option you need: With a 24-hour delay (you will have to wait for 24 hours) due to heavy workload and high demand - for free, Choose an optimal rate and be sure to get the unlimited number of samples immediately without having to wait in the waiting list, Using our plagiarism checker for free you will receive the requested result within 3 hours directly to your email. 1. Carbonate. Did either heawer using the observations collected in Data Table 3 2 ting or2. Explain your answer. When the can is opened the CO2 escaped the liquid causingbubbles, 8. C1 acid, and according to my table, phenolphthalein does not cause acids to turn pink. Easier to see under black paper. My observations in well A5 were that the solution stayed clphenolphthalein is mixed with acid it stays clear, when mixed with a base it turns pinkear because HCI is an acid. Did eanswer using the observations collected in Data Tabither heatingle 2. What might be concluded? Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on occurred, Copyright 2019 - Hands-On Labs | http://holscience.com 6 / 10. Phenolphthalein After adding BTB the color automatically changed to a copper color.
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