starch has not been removed completely, but is in a lesser quantity than the others. 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. Nitrate interpret this result? immediate ch yes A physical change occurred. Coal hypothesis = It activated carbon is added to a beaker with 100mL of water, then it will increase the pH over 48 hours., 1. The reaction turning yellow would be indicative of an acidic solution when mixed with BTB. When phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. What might be concluded? 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. : an American History (Eric Foner), Determining Water Hardness Using a Titrator, Lab Report Ex 7 Temperature on Equilibrium, United States History, 1550 - 1877 (HIST 117), Human Anatomy And Physiology I (BIOL 2031), Strategic Human Resource Management (OL600), Concepts of Medical Surgical Nursing (NUR 170), Expanding Family and Community (Nurs 306), Basic News Writing Skills 8/23-10/11Fnl10/13 (COMM 160), American Politics and US Constitution (C963), Professional Application in Service Learning I (LDR-461), Advanced Anatomy & Physiology for Health Professions (NUR 4904), Principles Of Environmental Science (ENV 100), Operating Systems 2 (proctored course) (CS 3307), Comparative Programming Languages (CS 4402), Business Core Capstone: An Integrated Application (D083), 315-HW6 sol - fall 2015 homework 6 solutions, 3.4.1.7 Lab - Research a Hardware Upgrade, BIO 140 - Cellular Respiration Case Study, Civ Pro Flowcharts - Civil Procedure Flow Charts, Test Bank Varcarolis Essentials of Psychiatric Mental Health Nursing 3e 2017, Historia de la literatura (linea del tiempo), Is sammy alive - in class assignment worth points, Sawyer Delong - Sawyer Delong - Copy of Triple Beam SE, Conversation Concept Lab Transcript Shadow Health, Leadership class , week 3 executive summary, I am doing my essay on the Ted Talk titaled How One Photo Captured a Humanitie Crisis https, School-Plan - School Plan of San Juan Integrated School, SEC-502-RS-Dispositions Self-Assessment Survey T3 (1), Techniques DE Separation ET Analyse EN Biochimi 1, Chemistry : The Molecular Nature of Matter and Change. 0000020326 00000 n KI Potassium clear liquid no change-cl no Institution Ocean County College turned into al yes False, 6. It did turn a bit darker blue. I would drop in some hydrochloric acid and see if the household product fizzes and releases gas. Chemical: Change', 2. green, the crystals I believe that this is the result of a chemical change. The sample turns pink. + Absorb in paper towel and expose to sunlight. Copyright 2019 - Hands-On Labs | http://holscience.com 3 / 10, Data Table 1: Chemical Change Observations. . Blue Dye #1 0000007380 00000 n Title: Observation of Chemical Change Course: General College Chemistry Purpose The purpose is to observe the macroscopic changes that these chemicals undergo. When the can is opened the CO2 escaped the liquid causingbubbles, 8. False. clear liquid brown grainy yes HCI and phenolphthalein Observations of the React LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION . Data Table 1: Chemical Change Observations. Identify the chemical in the table. NH; Aqucous Ammonia How about getting a customized one? bubbled and turned i. verif y that it is vinegar, you add a few drops of phenolphthalein. B2 NH4OH drops) While performing a starch test on several differtypical black color of starch presence, but the fifth gives a yellow-brown color. Cross), Chemistry: The Central Science (Theodore E. Brown; H. Eugene H LeMay; Bruce E. Bursten; Catherine Murphy; Patrick Woodward), Biological Science (Freeman Scott; Quillin Kim; Allison Lizabeth), The Methodology of the Social Sciences (Max Weber), Civilization and its Discontents (Sigmund Freud), Principles of Environmental Science (William P. Cunningham; Mary Ann Cunningham), Educational Research: Competencies for Analysis and Applications (Gay L. R.; Mills Geoffrey E.; Airasian Peter W.), Brunner and Suddarth's Textbook of Medical-Surgical Nursing (Janice L. Hinkle; Kerry H. Cheever), Campbell Biology (Jane B. Reece; Lisa A. Urry; Michael L. Cain; Steven A. Wasserman; Peter V. Minorsky), Forecasting, Time Series, and Regression (Richard T. O'Connell; Anne B. Koehler), Give Me Liberty! True 7. It seems that when phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. B1 AgNO3 Silver You can learn exactly what a light blue liqu no Automatically turned brown and when the starch was added it turned black. Color change to a glossy yellow from clear. I would believe that the substance is actually sodium hydroxide. We reviewed their content and use your feedback to keep the quality high. Of the two remaining one turns slightly yellow while one remains blue. 0000002819 00000 n 10.00 mL of solution ALPHA is diluted to 25.00 mL, resulting in solution BETA. Automatically turned brown. Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato clear liquid Condensing vapor 0000026639 00000 n Turned a yellow color and more bubbles (more than the carbonated soda) were produced. Data Tables: WELL/QUESTION A1/A B1/B C1/C D1/D . 4. Exercise 1Reactivity of Metals In this exercise, I will make and record observations of reactants, add drops of each reactant to aluminum foil, and monitor and record possible chemical reactions. Pb(NO z Load(W) Nltrate Acid (7 points), The above table shows the results of an experiment on the functioning of a mammalian kidney. Did either heating or burning produce a chemical change? clear liquid From this Data Table 1: Chemical Change Observations Chemical #1 Appearance Weil Chemical #1 (4 drops) A1 NaHCO, Sodium Bicarbonate Chemical #24 drops) Chemical #2 Appearance Observations Chemical Change (Y/N) HCI Hydrochloric Acid A2 IKI Indicator Starch A3 KI Potassium lodide A4 NaOH Sodium Hydroxide HCI Hydrochloric Acid Pb(NO3)2 Lead(ll) Nitrate C20H, 404. ii. Only the users having paid subscription get the unlimited number of samples immediately. black, 3 2 The flame glowed Vitamin Water PH is neutral. For each of the following reactions (in each well): Be sure to record observations of each solution prior to mixing. College of DuPage. Did either heating or burning produce a chemical change? chemical compound Data Table 1 24 Hour Services - Have an emergency? white powder 0000156016 00000 n Use your Hi there! Other than some bubbles produced there was no significant changes occurred when BTB was added. One of the reactions you observed resulted in these products: NaCl + H O + CO (g)? Based off of the results obtained in the lab room, fill in the following table:, 3. Do not sell or share my personal information. Easier to see under black paper. Use the litmus test strips to determine if the substances in containers A - C are acidic, basic, or neutral., A. There is no chemical change here, so that only exists a physical change. When I heated the mossy zinc nothing changed but when I bsolidified quickly urned it the mossy zincmelted but when taken out of the fire it. abbvie patient assistance program 7. Whatbservations for this reaction support your absence of lead in that hair tonic. test this material f or the presence of sodium bicarbonate? Obsarvation Bicarbonate Suppose a household product label says it contains sodium hydrogen carbonate dilution factor for ALPHA from stock solution = 0.167 Show your work: Balance the following chemical equation: 5.00 mL of stock solution is diluted to 25.00 mL, producing solution ALPHA. T hink about how phenolphthalein acts as an acid/base indicator. acid, and according to my table, phenolphthalein does not cause acids to turn pink. Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. When the starch was added to sodium hypochlorite NaOCI and potassium iodide KI it turned black. 0000008196 00000 n Turned a dark orange color. NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. Chemical Reactions. Get 5 free video unlocks on our app with code GOMOBILE, Data Table 1: Chemical = Change' Observations NaHCO3 and HCL-CO2 Jump the queue with a membership plan, get unlimited samples and plagiarism results immediately! Sorry, but copying text is forbidden on this website. Baking muffin batter to make muffins After exposure to bright light from my light bulb it turned a dark brown. HCI and Blue Dye 9. turned to a w yes You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Even when I kept the zinc over the flame after However when it was mixed with a base solution it turned pink. xH20 + crucible - 17.4960gmass of AB + crucible - 15.1314gCalculate the % water content of the hydrate3. 3. Session 2019L2 CHEM 181 DL1 Explain your answer. Sodium NaOH Sodium zinc metal. In the second step, the reactant was the direct sunlight. Cooking an egg Data Table 1: Chemical Change Observations I believe that this is the result of a chemical change. b. Windex, i. light blue liq NAHCO3 Boiling water your answer using the observations collected in Data Table 2. 2003-2023 Chegg Inc. All rights reserved. dark blue liq (AB Molar mass = 129.84 g/mol). 3. bubbles, is it the result of a chemical. yellow, there is some lead in the tonic. Apple slices turning brown in the air. 1. Here you will also find the best quotations, synonyms and word definitions to make your research paper well-formatted and your essay highly evaluated. The chemical mixtures are noted below in the Data Tables. Color change from clear to bright pink. Or if you need this sample for free, we can send it to you via email. More pronounced with white paper. Describe the similarit ies and/or dif f erences between heating and burning the mossy Academic anxiety? NH3 and BTB Burning paper product might be made out of from watching the reaction it has with heat, air, or water. The main difference in the two reactions came down to burning it. Chemical Change E (YiN) Do your observations in, B1 Observation 1: A chemical reaction occurred. HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate Automatically turned a cloudy yellow color and became more solidified than the other experiments. Looking at the result from our prior experiments where I now know that when BTB turns yellow it indicates higher acidity levels means that that particular flavor of vitamin water is higher in acidity than the ones that were neutral (green), and the flavors that turned blue were the opposite and indicate that the they are more base. Devise a simple test to confirm tsupposed to contain lead (an ingredient inhe presence or absence of lead in that hair When, 10. 5. change? became a white ash, 3 2 Melted and turned Separates to edges leaving hole in the middle. 5 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. Explain your answer. T he sample turns pink. Identify the products and the reactants in the reactions. Blablawriting.com provide for you a wide variety of top-notch essay and term paper samples on any possible topics absolutely. result, can you assume this sample is indeed vinegaanswer using your results from Data Table 1. r or contains some vinegar? The reactions in A5 definitely support this When heating the CuCO the powder became completely black and gas was released. Explain your answer. 1. Alive the neutralization prom lens below using the equation Ma Va=Mb Vb. 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. Bisulfate Chemical #2 (4 (7 points), 1. it is a red/bn Starch Physical change. clear liquid In this experiment, I learned that chemicals react in many ways when exposed to different things. 0000037522 00000 n The chemical mixtures are noted below in the Data Tables. Blue Dye and NaOCI tonic. 9. First week only $4.99! 0000013464 00000 n Phenolphthalein Data Table 1: Investigation of the Weight of Carbon Step 1: Make Baking Soda Observations Vinegar 50.00 cm3 of a 1.5784 mol.dm-3 solution of potassium hydroxide is transferred to an empty 700.00 cm3 volumetric flask. Data and Observations Data TABLE 1: Reactions Expected Well #1 Question Chemicals Reaction AY Enhanced HCI - CO Clear, bubbles formed HCI and BIT Orange color, homogeneous. iPad. 8. Vinegar is made up to acetic 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. I expect BTB to turn orange with an acid and blue with a base. 2. That gas causes the bubbles and fizzing. Cloudy on top. Chloride Both a chemical and physical change occurred. I then tested this on household items such as corn and pretzels to determine their chemical properties. 3. 9. A chemical change may also be referred to as a _____. clear liquid From the above data, give the correct formula for the hydrate. Did this reactant cause a Explain your answer. right side gas that was released caused the flame to glow bright blue. 0000013371 00000 n NaOH: NaOH, Educator app for Chemicals looks the san yes This reaction occurred in A1 I believe. . The reactant was sunlight which caused a chemical change. Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on 5. Explain your answer using your results f rom Data Table 1. 5. Experts are tested by Chegg as specialists in their subject area. By clicking "SEND", you agree to our terms of service and privacy policy. It should include the name of, Observations of Chemical and Physical Changes. 0000010561 00000 n helpful when trying to identify the chemical makeup of items. 1. 1. No color change, clear. If so, it most likely has sodium bicarbonate in it. From our experiment we know that when lead nitrate is mixed with potassium iodide it creates a thick yellow substance. Question/ Well Number 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. L /B5 Heating chemicals is defined by the process of combustion. Is cutting a cake into 8 pieces a chemical or a physical change? #1 It melted and 0000002911 00000 n a. The reactants and products are clear. We are really sorry but we cannot send the sample immediately. Question: Experiment 1 Exercise 1 B Data Table 1 Data Table 1: Chemical Change Observations Chemical #1 Appearance Chemical #2 Appearance Observations Chemical Change (Yes/No) Well Chemical #1 (4 drops) A1 NaHCO3 Sodium Bicarbonate A2 IKI indicator Chemical #2 (4 drops) HCI Hydrochloric Acid Starch A3 KI Potassium lodide Pb (NO3)2 Lead (II) Did either heating or burning produce a chemical change? Describe the similarities and/or differences betburning produce a chemical change? You have read that a new brand of hair tonic is supposed to contain lead (an ingredient in Grecian Formula). 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? Both burning and heating, Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, Psychology (David G. Myers; C. Nathan DeWall), Business Law: Text and Cases (Kenneth W. Clarkson; Roger LeRoy Miller; Frank B. flame when heated. You have read that a new brand of hair tonic is supposed to contain lead (an This would indicate that it is acidic. 6. Copper(II) Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. colorless Explain your ween heating and burning the mossy zinc metal. If the substance begins to turn Automatically turned a bright pink. chemical is bubbled and yes Describe how the observations for this reaction support your answer. Boil a small amount of water. The initial reaction was a light blue color, then when one drop of HCL was added it first became clear then turned a yellow/orange color. What does this indicate about a buffers ability to maintain pH when an acid or a base is added?, 1. C2 CaCl2 Calcium Devise a simple test to conf irm the presence or drops) NaOH Sodium Hydroxide answer using the observations collected in Data Table 2. Cooking tomatoes to make tomato sauce 1. A metal is added to a liquid and bubbles form. In addition, the student should also gain a betterunderstanding of the household chemicals that they use in their day to day lives.Procedure:Observe the chemical changes that occur by mixing a list of . data table 1: chemical change observations. Using a pipet two drops each chemical was deposited into the 24-well plate. 0000001376 00000 n light blue liq ii. 0000003312 00000 n no reaction after that. Bisulfate 0000006566 00000 n 9. Lesson Observations of Chemical Changes Change Suppose a household product label says it contains sodium hydrogen carbonate (sodium. List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. + Absorb in paper towel and expose to sunlight Observation 2: No color change, H / B1 Data Tables and Observations. When burning the chemical, the powder still turned black but (I assume) the Explain your ween heating and burning the magnesium metal. 0000009574 00000 n Describe how the oese products: NaCl + H O + CO (g)? chemical reaction The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. same side as the products 0000005742 00000 n A chemical reaction is a process where the atomsform new substances. Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: Part 1: Chemicals Well No. Did either heating or burning produce a chemical change? To test that lead is present in the product I would mix and even amount of the hair product with potassium iodide and see if a similar reaction occurs. How might you interpret this result? d. Clementine Izzy colorless The main objectives . Three household products mixed with bromothymol blue (BTB): a. 0000042217 00000 n city of semmes public works. black, Copyright 2019 - Hands-On Labs | http://holscience.com 10 / 10, CHEM181DL1_ObservationsofChemicalChanges_48408.pdf. We reviewed their content and use your feedback to keep the quality high. Course CHEM 181 DL1 Explain your answer. clear liquid Is cutting a cake into 8 pieces a chemical or a physical change? AgNO3 Silver(I) Copyright 2019 - Hands-On Labs | http://holscience.com 8 / 10. When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. a dark blue formed Describe the similarit ies and/or dif f erences between heating and burning the To verifythalein. Instructor Lea Stage, CHEM 181 DL1 There was HC Na cO3 Sodium Use your observations to support your answer. In our prior experiments when phenolphthalein was added to a solution that was acidic it had no reaction, it stayed clear. Cutting a steak, 3. ii. Then allow the melted wax to cool. Explain your ansween heating and burning the Cu(NO ). into a bright white Record your result in Table 3., b. 0000045990 00000 n Green Works from Clorox Copyright 2019 - Hands-On Labs | http://holscience.com 2 / 10. 1. Identify the products and the reactants in the reactions. True When caused the zinc to heat up and melt into a liquid. Create and complete a data table for Part Two of the lab. Use your observations to support your answestep? 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. NaOH and AgNO3 False, 10. your answer with observations made and recorded in Data Table 2. Color turned brown-looks thicker Sodium *jh DV_ =&)&(idnb]~U4g0Dt8otSb !0=rxg_mSy8|+o="Z7X ~3Ala}Jr\N/c6&bl:%qORyK1LkrL+N5 endstream endobj 61 0 obj <. Aqueous left side, 5. The sample turns pink. Categorize each change as physical or chemical. bubbled whe Carbonate. Bicarbonate support your answer. Explain your answer Explain your Turned blue & precipitate formed, at bottom physical change, 2. While burning it turned the flames green. Ammonia directly over a flame, the magnesium bursts into a bright white light, whereas in the test tube it How would you describe the dif f erences between heating and burning? The reaction was a misty blue color. To verify, that it is vinegar, you add a few drops of phenolphthalein. clear liquid of substances interact with one another to, 4. Sukmit You[ Data, Experiment 1 Do your observations collected in Data Table 2. 0000013648 00000 n Your Answer Is Very Helpful For UsThank You A Lot! Copper(I) air while being poured into the glass, a gas is released. I would drop some of the hair tonic into some potassium iodide. green, lots of fizz ing To Did eanswer using the observations collected in Data Tabither heatingle 2. 10.00 mL of solution BETA is then diluted to 25.00 mL, producing solution GAMMA. turned black, Glowed red, then turned C Chemical change. NH3 and CuSO 1 The color changed from blue to green. 4. 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Write the chemical equation(s) for each part of the following terms as it relates to this experiment., 5.List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. c. 146.6 mL NaCl Phenolphthalein Data Table 1: Chemical Change Observations Chemical #1 Appearance Weil Chemical #1 (4 drops) A1 NaHCO, Sodium Bicarbonate Chemical #24 drops) Chemical #2 Appearance Observations Chemical Change (Y/N) HCI Hydrochloric Acid A2 IKI Indicator Starch A3 KI Potassium lodide A4 NaOH Sodium Hydroxide HCI Hydrochloric Acid Pb(NO3)2 Lead(ll) Nitrate C20H, 404 Phenolphthalein C20H1404 Phenolphthalein A5 A6 AgNO3 Silver(1) Nitrate NaOH Sodium Hydroxide AgNO, Silver Nitrate B1 Observation 1: NH, Aqueous Ammonia 1. After adding BTB the color automatically changed to a copper color. flame, then turned into 2 No chemical reaction occurred. Have not found what you were looking for? The result of the mixture indicates that the solution is basic because it turned (stayed) blue. 1. ii. 0000002033 00000 n I did not observe any differences between the heating and burning of the zinc. Sodium hydroxide is a base and hydrochloric acid is an acid. Experts are tested by Chegg as specialists in their subject area. Aqueous The whole doc is available only for registered users. NaOCI and KI Exercise 1: Observations of a Chemical Change Data Table 1. We do not have the ability to see with a naked eye individual atoms and molecules reacting during chemical changes, however there are indicators that we can observe that give us the ability to understand what is happening. Appearance A4 This is a chemical reaction because it NH2OH While preforming a starch test on several different cookie brands, four test result in the typical black color of starch presence, but the fifth gives you a yellow-brown color. melting, no type of chemical reaction occurred. clear liquid Observation 0000012812 00000 n 3. Looked thicker than other liquids. Chemical Reactions. The heating and burning of Cu(NO ) was exactly the same, other than the addition of the glowing That was the only reaction that caused any type of fizzing 1: clear liquid CuSO4 Copper(I) B2 NH4OH Aqueous light blue liq became a da yes Ammonia Sulfate B3 Pb(NO32 Lead clear liquid CaCl2 Calcium clear liquid turned to a w yes Nitrate Chloride B4 NaHSO4 in the beginni yes clear liquid clear liquid CaCl2 Calcium Sodium Bisulfate Chloride 5 NAHSO4 Na cO3 Sodium bubbled whe clear liquid clear liquid yes Sodium Bisulfate Carbonate CuSO4 6 light blue liq NAHCO3 clear liquid light blue liqu no Copper(II) Sulfate Sodium Bicarbonate Blue Dye #1 C1 C dark blue liq clear liquid turned into al yes Hydrochloric Acid C2 Na2CO3 Sodium C20H1404 Phenolphthalein clear liquid clear liquid looks the san yes Carbonate 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 liquid immediately t yes clear liquid lodide A4 NaOH Sodium C20H1404 Phenolphthalein clear liquid clear liquid immediately t yes Hydroxide 5 HC C20H1404 Phenolphthalein clear liquid clear liquid no change-cl no Hydrochloric Acid A6 NAOH Sodium AgNO3 Silver(I) clear liquid brown grainy yes clear liquid Hydroxide Nitrate B1 AgNO3 Silver NH2OH Aqueous clear liquid clear liquid Observation no Nitrate Ammonia 1. Copyright 2019 - Hands-On Labs | http://holscience.com 1 / 10, Student ID 48408 Sodium J /B3 ;Cr*P XU#VE-K.I0*^]4Wb!0I4/Z`i*;|usI""00Va6De=/{cuV%'T(6>fElvK5!%~aTbOw4T;u10k/y)'9>{0vv-kf@! How about getting this access immediately? NaHCO3 sodium bicarbonate is a widely known household product otherwise known as baking soda. part c and d? Three of the flavor-samples turn a murky green indicating thelikelihood of acid/base balance. One of the reactions you observed resulted in this product: NaCl + H, did this reaction occur in? Pb(NO3}2 Support Descubr lo que tu empresa podra llegar a alcanzar. ingredient in Grecian Formula ). Wash your hands thoroughly with warm water and soap or detergent before leaving the laboratory. conclusion; observation, 7. clear liquid Use your observations in Data Table 1 to describe a 0000012940 00000 n When the chemicals in the soda mix with the vinegar? Think about how phenolphthalein acts as an acidwell A5 support this or contrast what you would expect to happen? Want to add some juice to your work? 8. 6. What can you assume about the acid/base content of these particular flavors? When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. A _____ is a change in the form of a substance. Na2CO3 Sodium colorless bubbling and fizz ing 4. The color was more pronounced under the white piece of paper. Expert Help. was sodium hypochloriteand potassium. 8. 0000016961 00000 n Acid d. 218.33 mL NaCl. Experiment 1 Exercise 1 B Data Table 1 Data Table 1: Chemical Change Observations Chemical #1 Appearance Chemical #2 Appearance Observations Chemical Change (Yes/No) Well Chemical #1 (4 drops) A1 NaHCO3 Sodium Bicarbonate A2 IKI indicator Chemical #2 (4 drops) HCI Hydrochloric Acid Starch A3 KI Potassium lodide Pb(NO3)2 Lead(II) Nitrate 44 C20H1404. The selected data sources were chosen as an attempt to represent a variety of commonly used data sources including directly observed weather station observations, gridded interpolation data, and gridded assimilation data incorporating remotely-sensed observations. Hydrochloric While performing a starch test on several dif f erent cookie brands, f our tests result Reaction 0000001895 00000 n A1 NaHCO Experiment 1 Exercise 1 B Data Table 1 Data Table 1: Chemical Change Observations Chemical #1 Appearance Chemical #2 Appearance Observations Chemical Change (Yes/No) Well Chemical #1 (4 drops) A1 NaHCO3 Sodium Bicarbonate A2 IKI indicator Chemical #2 (4 drops) HCI Hydrochloric Acid Starch A3 KI Potassium lodide Pb(NO3)2 Lead(II) Nitrate 44 C20H1404 Phenolphthalein NaOH Sodium Hydroxide HCI Hydrochloric Acid A5 C20H1404 Phenolphthalein. in the beginni yes 5 Observation of Physical and Chemical Changes, Exercise 1: Observations of a Chemical Change. HC -Part A: Record all observations of Part A in Data Table 1 1. (sodium bicarbonate). 0000004983 00000 n This flask is made up to the mark with distilled water and then shaken well. KI Potassium Iodido Lesson Observations of Chemical Changes b. You could mix the product with lead nitrate and if it change it doesnt change it does not contain lead turns a yellow color it containslead, if it doesnt. 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