Blue Dye and NaOCI 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. How would you describe the dif f erences between heating and burning? Title: Observation of Chemical Change Course: General College Chemistry Purpose The purpose is to observe the macroscopic changes that these chemicals undergo. KI Potassium Iodido That gas causes the bubbles and fizzing. When phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. Colorless NaHCO3 sodium bicarbonate is a widely known household product otherwise known as baking soda. 7. chemical compound Describe the similarit ies and/or dif f erences between heating and burning the 5 clear liquid The result of the mixture indicates that the solution is basic because it turned (stayed) blue. Explain your answer Turned a dark orange color. Sulfate C20H1404 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. 0000002033 00000 n Get 5 free video unlocks on our app with code GOMOBILE, Data Table 1: Chemical = Change' Observations While burning it turned the flames green. Explain your ween heating and burning the mossy zinc metal. HCI and phenolphthalein IKI Indicator There is no chemical change here, so that only exists a physical change. You found a sample of a solution that has a f aint odor resembling vinegar (an acid). Mark decided to investigate some household materials using the phenolphthalein solution.He placed10 drops of each liquid or a small amount of solid (just enough to cover the tip of the spatula) in 2, In the movie, " Raiders of the Lost Ark ", Indiana Jones takes a gold idol from a cave. I believe that this is the result of a chemical change. 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. 5.00 mL of stock solution is diluted to 25.00 mL, producing solution ALPHA. clear liquid How would you test this material for the presence of sodium bicarbonate? I /B2 After adding BTB the color automatically changed to a copper color. How about getting this access immediately? What might be concluded? yellow, there is some lead in the tonic. In well B1, what was the reactant in the second change? Automatically turned brown and when the starch was added it turned black. Student NameStudent ID yumeng zhang 164162 A metal is added to a liquid and bubbles form. 6. AgNO3 (aq) + NaOH (aq) ------> AgOH (s) + NaNO3 (aq). Copper(II) table, phenolphthalein causes bases to turn pink and acids to remain clear. Vinegar is made up to acetic We reviewed their content and use your feedback to keep the quality high. gas that was released caused the flame to glow bright blue. This is a chemical reaction because it Did either heating or burning produce a chemical change? turned to a w yes Lead() Nitrate Did answer using the observations collected in Data Tabeither heatingle 2. What well did this reaction occur in? NaOH and AgNO3 NAHSO4 turned into al yes Physical change. Separates to edges leaving hole in the middle. 0000008196 00000 n Instructor Lea Stage, CHEM 181 DL1 I also learned that these chemical reactions could be very Combustion occurred. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Suppose a household product label says it contains sodium hydrogen carbonate clear liquid Thank you! and gas released, then data table 1: chemical change observations. Describe how the oese products: NaCl + H O + CO (g)? The reaction was a misty blue color. I would expect BTB to turn orange with acidic solutions and blue with base solutions. 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Appearance Experts are tested by Chegg as specialists in their subject area. Lesson Observations of Chemical Changes 2. Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. 0000003479 00000 n Reactions/Observation. bubbled and turned Bisulfate Chloride Instructor James Maxwell. C2 The reaction turning yellow would be indicative of an acidic solution when mixed with BTB. Well Chemical #1 (4 Chemical Na2CO3 Sodium 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. Explain your answer. Observations Chemical B, clear to straw yellow color clear liquid brown grainy yes part c and d? cloudy ash, 3 The flame glowed blue 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. A2 coloreless Green Works from Clorox While performing a starch test on several differtypical black color of starch presence, but the fifth gives a yellow-brown color. helpful when trying to identify the chemical makeup of items. Bicarbonate Observations Question: 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) The heating and burning of Cu(NO ) was exactly the same, other than the addition of the glowing Cloudy on top. So, according to the 7. no 0000012940 00000 n Sodium Explain The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. magnesium metal. test this material f or the presence of sodium bicarbonate? Pb(NO3}2 clear liquid Cutting a steak, 3. clear liquid Record your result in Table 3., b. Nitrate Do not sell or share my personal information. turned black, Glowed red, then turned 0000002118 00000 n vinegar? SO2 + H2S ---> H2O + S, Drug A dissociates into four ions to the extent of 70%. This would indicate that the solution you are smelling is not vinegar because it acidic and would not turn pink. 0000013464 00000 n melting, no type of chemical reaction occurred. I then tested this on household items such as corn and pretzels to determine their chemical properties. 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. You have read that a new brand of hair tonic is Grecian Formula ). Data Table 1: Investigation of the Weight of Carbon Step 1: Make Baking Soda Observations Vinegar Get original paper in 3 hours and nail the task . 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. was sodium hypochloriteand potassium. 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. Lesson Observations of Chemical Changes NAOH Sodium To Well Chemical #1 (4 drops) Chemical #2 (4 drops) Observations: Chemical Change (Y/N) A1 NaHCO3 Sodium Bicarbonate HCl Hydrochloric Acid A2 NaOCl Sodium Hypochlorite KI Potassium Iodide Observation 1: + Add 2 drops of starch Observation 2: A3 KI Potassium Iodide Observation 1:reddish participate formed When The purpose of this experiment is for the student to gain knowledge and experience regarding how avariety of chemicals react to one another. Course CHEM 181 DL1 The concentration of the potassium hydroxide in this second flask is: Please show steps and states (aq),(s).. etc thank you. it is a red/bn Starch ting and. just glowed red and turned into ashes. Which of the four chemicals that was heated produced a physical change? material for the presence of sodium bicarbonate? From this, Observations of Chemical and Physical Changes. Melt a small amount of candle wax. MW of Drug A= 892.54 (assume final volume will be qs with sterile water for injection) ingredient in Grecian Formula ). d. 218.33 mL NaCl. Pb(NO z Load(W) Nltrate 4. False, 6. HCI and Blue Dye While performing a starch test on several dif f erent cookie brands, f our tests result Is cutting a cake into 8 pieces a chemical or a physical change? B4 NaHSO4 Data Tables and Observations. verif y that it is vinegar, you add a few drops of phenolphthalein. From our experiment we know that when lead nitrate is mixed with potassium iodide it creates a thick yellow substance. 8. HC 6. 3. Find the corresponding IKI indicator. Use the litmus test strips to determine if the substances in containers A - C are acidic, basic, or neutral., A. C20H1404 Formation of gas bubbles were immediate and consistent for some time. Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. 1. To verifythalein. We have received your request for getting a sample. Substance Y was likely, C. Explain how the data from Tables 1 and 2 are similar and different from the data in Tables 3 and 4. It did turn a bit darker blue. True 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! Course Hero is not sponsored or endorsed by any college or university. Suppose a household product label says it contains sodium carbonate (sodium bicarbonate). Explain your ansween heating and burning the Cu(NO ). Explain your answer. physical change, 2. When, 10. 2. Chloride If you need this or any other sample, we can send it to you via email. 2. dilution factor for BETA from ALPHA solution = 0.0476 9. Heating How about getting a customized one? Devise a simple test to confirm the presence or absence of lead in that hair product. Acid light blue liq NAHCO3 155.9 ml NaCl NH2OH Identify an example of a chemical change. 0000003095 00000 n air while being poured into the glass, a gas is released. Copyright 2019 - Hands-On Labs | http://holscience.com 8 / 10. a. (Yes/No) data table 1: chemical change observations June 14, 2022 salem witch trials podcast lore I. conclusion; observation, 7. The main objectives . In the second step, the reactant was the direct sunlight. 1. A chemical change may also be referred to as a _____. ii. False. looks the san yes Copying is only available for logged-in users, If you need this sample for free, we can send it to you via email. AgNO3 Silver(I) black, Copyright 2019 - Hands-On Labs | http://holscience.com 10 / 10, CHEM181DL1_ObservationsofChemicalChanges_48408.pdf. What well did this reaction occur in? clear liquid immediately t yes No color change, clear. Describe the similarit ies and/or dif f erences between heating and burning the CuCO . Even when I kept the zinc over the flame after #1 Academic anxiety? 50.00 cm3 of a 1.5784 mol.dm-3 solution of potassium hydroxide is transferred to an empty 700.00 cm3 volumetric flask. colorless HC Other than some bubbles produced there was no significant changes occurred when BTB was added. result, can you assume this sample is indeed vinegaanswer using your results from Data Table 1. r or contains some vinegar? The reactant was sunlight which caused a chemical change. Boil a small amount of water. Then allow the melted wax to cool. More pronounced with white paper. Phenolphthalein 6 Find the corresponding NaOH indicator. Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. Observations of Chemical Change - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. Sodium observations in well A5 support this or contrast what you would expect to happen? To verify, that it is vinegar, you add a few drops of phenolphthalein. However when it was mixed with a base solution it turned pink. 0000013648 00000 n 0000020789 00000 n 10.00 mL of solution BETA is then diluted to 25.00 mL, producing solution GAMMA. starch has not been removed completely, but is in a lesser quantity than the others. Chemical #2 (4 Chemical #2 drops) Appearanca HCI Hydrochloric Acid bule color, bubbling occured The sample turns pink what can you assume about his sample? Chemical Reactions. Chemical: Change', 2. and the powder turned 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. ii. 6. Describe how your observations for this reaction support your, You found a sample of a solution that has a faint odor resembling vinegar (an acid). Prepare 750 mL of 6.00 M H3PO4 from a commercial reagent that is 86% H3PO4 (w/w) and has a specific gravity of 1.71. Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). AgBO3 and NH3 Aqueous Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato What does this indicate about a buffers ability to maintain pH when an acid or a base is added?, 1. First week only $4.99! clear liquid Observation Institution Ocean County College The only chemical that has a physical change when heated was the mossy zinc. Copyright 2019 - Hands-On Labs | http://holscience.com 9 / 10, glowed bright red and We'll occasionally send you account related and promo emails. Describe the similarit ies and/or dif f erences between heating and burning the mossy Labpaq lab 1: Observation of chemical change lab report . 0000015833 00000 n H / B1 2003-2023 Chegg Inc. All rights reserved. -Part A: Record all observations of Part A in Data Table 1 1. CuSO4 Hi there! answer. Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy. absence of lead in that hair tonic. drops) ii. The following item is based on an analysis of the data. The sample turns pink. 0000029863 00000 n Explain your answer. change? clear liquid 0000003003 00000 n 9. A4 1. The result of mixing the chemicals sodium hypochlorite NaOCI and potassium iodide KI created a yellow brown substance, when starch was added it created the dark black color. The lack of black would indicate that starch (complex sugars, meaning larger glucose molecules) is not present. When the can is opened the CO2 escaped the liquid causingbubbles, 8. Explain your answer using the Observation 2: Use your observations in Data Table 1 to describe a Using a pipet two drops each chemical was deposited into the 24-well plate. Sodium pollard funeral home okc. 0000020326 00000 n 1 The color changed from blue to green. (sodium bicarbonate). 0000003188 00000 n Sodium 0000013371 00000 n Hydrochloric 0000005742 00000 n High Fructose Corn Syrup: A Dangerous Chemical in Food, Interesting Observation of Two People at My Local McDonalds, Ethnographic Observation at Three Starbucks Locations, China Needs Immediate Action to Avoid Future Negative Climate Change, Upward Influence Tactics and Employee Role Change, The role of psychology in climate change debate, Resilience of Human Systems and Climate Change, A History of Racial Discrimination and the Fight for Change, Sexual Harassment: Google Needs to Establish a Sense of Urgency to Change. Label each substance on seven pieces . bubbles, is it the result of a chemical. In this experiment, I learned that chemicals react in many ways when exposed to different things. I did not observe any differences between the heating and burning of the zinc. We dont have your requested question, but here is a suggested video that might help. 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. your answer using the observations collected in Data Table 2. 0000012812 00000 n 2. Automatically turned a bright pink. turned the color of dark brown similar to rust on the paper towel. 0000016961 00000 n Obsarvation + Absorb in paper towel and expose to sunlight Color change from clear to bright pink. Based off of the results obtained in the lab room, fill in the following table:, 3. 0000001895 00000 n posit ive result f or this test. Devise a simple test to conf irm the presence or I would drop in some hydrochloric acid and see if the household product fizzes and releases gas. xH20 + crucible - 17.4960gmass of AB + crucible - 15.1314gCalculate the % water content of the hydrate3. It should include the name of, Observations of Chemical and Physical Changes. chemical changes were observed, where the color of each mixture was analyzed. flame when heated. Write the chemical equation for the reaction in well A6. chemical reaction Question/ Well Number Is cutting a cake into 8 pieces a chemical or a physical change? The sample turns pink. trailer <<1F743DE7EAF4484B866163DC32EB514E>]>> startxref 0 %%EOF 113 0 obj <>stream 0000023384 00000 n 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. Observation 2 after sunlight: turned darker data table 1: chemical change observationspet friendly rentals lewis county, wa data table 1: chemical change observations. dilution factor for ALPHA from stock solution = 0.167 Carbonate. So next we can look at salt and water that undergoes evaporation to this form salt in the solid state, which is a physical process. clear liquid A(n) _____ is the explanation of why something hwhat happened. Descubr lo que tu empresa podra llegar a alcanzar. J /B3 List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. Chemical Change E (YiN) clear liquid immediately t yes A _____ is a change in the form of a substance. clear liquid Color change to light blue. Explain your answer. A chemical reaction occurred. 1. The reactant was sunlight which caused a chemical change. 2. Copyright 2019 - Hands-On Labs | http://holscience.com 4 / 10, Copyright 2019 - Hands-On Labs | http://holscience.com 5 / 10. Yellow thick precipitate Reaction: Water and carbon dioxide are formed when ethane (C H2 6) is burned in the presence of oxygen. Bright purple in color 8. b. Windex, i. Looked thicker than other liquids. 0000042217 00000 n Step 2: Ask Question a Question and Conduct Mass (amu) 44.01 amu Background of COz Research Mass (amu) 28.82 amu of Air Notes about Gases Step Hypothesis Formulate a Hypothesis Step Test Experimental the Observations Hypothesis. In this experiment there were fourteen different chemicals of which were mixed with each other twelve different times and I observed there reactions. How might you interpret this result? Start your trial now! 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. 0000004644 00000 n #2 Whatbservations for this reaction support your If the substance begins to turn in the typical black color of starch presence, but the f if th gives a yellow-brown color. chemical is When a soda is poured into a glass and the soda bubbles, is it the result of a chemical Phenolphthalein 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. 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. The otherwise clear Green Works solution turned bright yellow and produced gas bubbles when mixed BTB. The chemical mixtures are noted below in the Data Tables. This reaction occurred in A1 I believe. 3. light blue liq NaHCO3 and HCL-CO2 B2 NH4OH 3. Get access to our huge, continuously updated knowledge base. 10. 1. or gas, which would be the CO . In our prior experiments when phenolphthalein was added to a solution that was acidic it had no reaction, it stayed clear. There was Did either heating or burning produce a chemical change? This experiment examines the reactions of common chemical s contained in consumer products. 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 . KI and Pb(NO3) Describe the similarit ies and/or dif f erences between heating and burning the Blue Dye #1 You found a solution that has a faint odor resembling vinegar. state of matter. Hydrochloric 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. Did either heating or burning produce a chemical change? bubbles, is it the result of a chemical. Nitrate NaOCI and KI Did either heating or burning produce a chemical change? When the can is opened the CO2 escaped the liquid causingbubbles. statement. Copper(I) Na cO3 Sodium This flask is made up to the mark with distilled water and then shaken well. Use your observations to support your answestep? HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate Data Table 2: Reaction Observations Use your observations to support your answer. 0000003312 00000 n 9. That yellow stayed concentrated at the top segregated. Nitrate After exposure to bright light from my light bulb it turned a dark brown. NaOH and phenolphthalein The users without accounts have to wait due to a large waiting list and high demand. c. Apple Jucie. Data Table 1 C I would believe that the substance is actually sodium hydroxide. 0000006566 00000 n acid, and according to my table, phenolphthalein does not cause acids to turn pink. c. 146.6 mL NaCl If so, it most likely has sodium bicarbonate in it. Write the chemical equation for the reaction in well A6. You have read that a new brand of hair tonic is supposed to contain lead (an ingredient in Grecian Formula). colorless Explain your answer. Change Please please please show all the work T hink about how phenolphthalein acts as an acid/base indicator. Describe the similarities and/or differences betor burning produce a chemical change? Bicarbonate C20H, O4 Phenolphthaloin CzoH/+404 Phenolphthaleln AgNO; Silver(W) Nitrale B1 AgNO3 Silver One of the reactions you observed resulted in thwell did this reaction occur in? Chemicals A physical change occurred. Use your observations in Data Table 1 to describe a positive result for this test. Identify the products and the reactants in the reactions. I would drop some of the hair tonic into some potassium iodide. 0000007380 00000 n Sodium hydroxide is a base and hydrochloric acid is an acid. How might youent cookie brands, four tests result in the chemical change Clear no reaction. Automatically turned a dark green. clear liquid CuSO4 Wash your hands thoroughly with warm water and soap or detergent before leaving the laboratory. 7. Describe how the observations for this reaction support your answer. Copyright 2019 - Hands-On Labs | http://holscience.com 1 / 10, Student ID 48408 It melted and 1. 0000003755 00000 n the method that chemical was tested. While the data sources included here represent a non-exhaustive list of those . right side It seems that when phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. city of semmes public works. Is cutting a cake into 8 pieces a chemical or a physical change? Phenolphthalein The blue crystals melted during both hear a while. 0000154339 00000 n 0000002525 00000 n Boiling water
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