You'll get a detailed solution from a subject matter expert that helps you learn core concepts. The following item is based on an analysis of the data. Copper(II) NH3 and BTB Hydrochloric It seems that when phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. What might be concluded? Sodium hydroxide is a base and hydrochloric acid is an acid. SO2 + H2S ---> H2O + S, Drug A dissociates into four ions to the extent of 70%. Combustion occurred. green, the crystals Suppose a household product label says it contains sodium hydrogen carbonate (sodium. 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. The sample turns pink. 0000003479 00000 n Use your observations in Data Table 1 to describe a your answer using the observations collected in Data Table 2. Devise a simple test to confirm tsupposed to contain lead (an ingredient inhe presence or absence of lead in that hair Lead() Nitrate or gas, which would be the CO . immediate ch yes 0000015516 00000 n No color change, clear. of substances interact with one another to, 4. List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. Lesson Observations of Chemical Changes 0000010561 00000 n HCI and BTB your answer with observations made and recorded in Data Table 2. _____ magnesium generates a very bright light. The reactant was sunlight which caused a chemical change. bubbled whe 0000004983 00000 n A chemical change may also be referred to as a _____. melting, no type of chemical reaction occurred. The reactants and products are clear. chemical change Cooking an egg clear liquid i. NH; Aqucous Ammonia 2. Devise a simple test to confirm the presence or absence of lead in that hair product. 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. 10.00 mL of solution ALPHA is diluted to 25.00 mL, resulting in solution BETA. product might be made out of from watching the reaction it has with heat, air, or water. 0000009027 00000 n That yellow stayed concentrated at the top segregated. Get 5 free video unlocks on our app with code GOMOBILE, Data Table 1: Chemical = Change' Observations Three of the flavor-samples turn a murky green indicating thelikelihood of acid/base balance. Did this reactant cause a 8. Explain your answer using your results f rom Data Table 1. C Observation of Physical and Chemical Changes, Exercise 1: Observations of a Chemical Change. To 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). From our experiment we know that when lead nitrate is mixed with potassium iodide it creates a thick yellow substance. False. You have read that a new brand of hair tonic is supposed to contain lead (an ingredient in Grecian Formula). Explain your 0000002911 00000 n 5.00 mL of stock solution is diluted to 25.00 mL, producing solution ALPHA. Data Table 2: Reaction Observations B4 NaHSO4 conclusion; observation, 7. 9. The color was more pronounced under the white piece of paper. 1. Course CHEM 181 DL1 Burning C20H, O4 Phenolphthaloin CzoH/+404 Phenolphthaleln AgNO; Silver(W) Nitrale occurred, Copyright 2019 - Hands-On Labs | http://holscience.com 6 / 10. dark blue liq NaOCI and KI table, phenolphthalein causes bases to turn pink and acids to remain clear. directly over a flame, the magnesium bursts into a bright white light, whereas in the test tube it 5 i. physical change Acquire a clean spot plate. Academic anxiety? Question/ Well Number + Absorb in paper towel and expose to sunlight Observation 2: No color change, Automatically turned a cloudy yellow color and became more solidified than the other experiments. There is no chemical change here, so that only exists a physical change. How would you describe the dif f erences between heating and burning? Even when I kept the zinc over the flame after Explain your answer. magnesium metal. 60 0 obj <> endobj xref 60 54 0000000016 00000 n xH20 + crucible - 17.4960gmass of AB + crucible - 15.1314gCalculate the % water content of the hydrate3. Start your trial now! When a soda is poured into a glass and the soda change? Sodium A6 turned the color of dark brown similar to rust on the paper towel. b. Windex, i. Explain your answer./base indicator. data table 1: chemical change observations. same side as the products Melt a small amount of candle wax. 0000016961 00000 n Only the users having paid subscription get the unlimited number of samples immediately. 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. The main difference in the two reactions came down to burning it. Call us now: 012 662 0227 what happened to yourpalross. What well did this reaction occur in? 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. Obsarvation ting and. b. NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. I /B2 Show your work: Balance the following chemical equation: (sodium bicarbonate). Thank you! clear liquid Then allow the melted wax to cool. A white precipitate formed from the mixing of two liquids is an indication of a chemical change. 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. Chemical Reactions. 2003-2023 Chegg Inc. All rights reserved. When a soda is poured into a glass and the soda bubbles, is it the result of a chemical Appearance 0000013648 00000 n 0000003095 00000 n 0000004644 00000 n You found a sample of a solution that has a f aint odor resembling vinegar (an acid). Turned a dark orange color. 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. Explain your answer using the colorless Chemical change. test this material f or the presence of sodium bicarbonate? 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Color change to a glossy yellow from clear. NaOH and phenolphthalein 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. 1. (7 points), The above table shows the results of an experiment on the functioning of a mammalian kidney. 0000005742 00000 n turned to a w yes acid, and according to my table, phenolphthalein does not cause acids to turn pink. caused the zinc to heat up and melt into a liquid. material for the presence of sodium bicarbonate? Did either heating or burning produce a chemical change? chemical change? 10.00 mL of solution BETA is then diluted to 25.00 mL, producing solution GAMMA. A4 Explain your answer. Describe the similarit ies and/or dif f erences between heating and burning the c. Apple Jucie. vinegar? There was B, clear to straw yellow color city of semmes public works. The sample turns pink. 5. False, 10. 3. The statue is resting on a table which is rigged with a weight sensor.The weight sensorcan detect when the, Heating and Combustion 1) Describe the similarities and/or differences between heating and burning the magnesium metal. Find the corresponding NaOH indicator. what does r 4 mean in linear algebra; borage tincture recipe; lorgnette opera glasses; The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. Experts are tested by Chegg as specialists in their subject area. Get original paper in 3 hours and nail the task . dilution factor for BETA from ALPHA solution = 0.0476 Acid clear liquid Describe the similarities and/or differences betor burning produce a chemical change? 0000003003 00000 n Automatically turned a bright pink. Chopping tomatoes Peeling apples, 2 That was the only reaction that caused any type of fizzing NaOH Sodium Hydroxide How might you interpret this result? Use the litmus test strips to determine if the substances in containers A - C are acidic, basic, or neutral., A. Blue Dye #1 ii. appened, and a(n) _____ is a description of, observation; conclusion 0000003663 00000 n What does this indicate about a buffers ability to maintain pH when an acid or a base is added?, 1. Use your observations in Data Table 1 to describe a positive result for this test. A(n) _____ is the explanation of why something hwhat happened. When the can is opened the CO2 escaped the liquid causingbubbles. Did either heating or burning produce a chemical change? Na cO3 Sodium CuSO4 1. Phenolphthalein 62.37 mL NaCl Did this reactant cause a chemicalr. The reactions in A5 definitely support this If the substance begins to turn When 1. 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Color turned brown-looks thicker While performing a starch test on several dif f erent cookie brands, f our tests result The blue crystals melted during both hear a while. bule color, bubbling occured Sulfate You can learn exactly what a Explain your answer A physical change occurred. Physical observations can be used to determine if a chemical change has occurred. Data Tables: WELL/QUESTION A1/A B1/B C1/C D1/D . chemical is bubbled and yes dilution factor for ALPHA from stock solution = 0.167 in the beginni yes clear liquid In this experiment, I learned that chemicals react in many ways when exposed to different things. NH3 and CuSO To verifythalein. clear liquid The result of the mixture indicates that the solution is basic because it turned (stayed) blue. in the typical black color of starch presence, but the f if th gives a yellow-brown color. You have read that a new brand of hair tonic is Grecian Formula ). drops) 0000004304 00000 n 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. support your answer. using the observations collected in Data Table 2. KI and Pb(NO3) Describe the similarit ies and/or dif f erences between heating and burning the mossy 8. Baking muffin batter to make muffins 3. Formation of gas bubbles were immediate and consistent for some time. More pronounced with white paper. light blue liq interpret this result? Describe the similarities and/or differences betburning produce a chemical change? ii. Use your 1 The color changed from blue to green. Find the corresponding IKI indicator. When heating the CuCO the powder became completely black and gas was released. 1. 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). Lesson Observations of Chemical Changes It should include the name of, Observations of Chemical and Physical Changes. 0000002525 00000 n 0000003848 00000 n Write the chemical equation for the reaction in well A6. 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! I also learned that these chemical reactions could be very Describe how the observations for this reaction This flask is made up to the mark with distilled water and then shaken well. air while being poured into the glass, a gas is released. A metal is added to a liquid and bubbles form. 1. yellow, there is some lead in the tonic. No problem! One of the reactions you observed resulted in these products: NaCl + H O + CO (g)? (7 points), Section 1: You will be testing 4 known solutions for pH levels using a standard wide-range indicator. HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate Colorless 7. 0000009972 00000 n (7 points), 1. . Use your observations to support your answer. coloreless Want to add some juice to your work? Is cutting a cake into 8 pieces a chemical or a physical change? Identify an example of a chemical change. What well did this reaction occur in? Log in Join. ash, 3 The flame glowed blue We use cookies to give you the best experience possible. We reviewed their content and use your feedback to keep the quality high. 2. 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. Do not sell or share my personal information. . NaHCO3 sodium bicarbonate is a widely known household product otherwise known as baking soda. Acid 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. In this experiment there were fourteen different chemicals of which were mixed with each other twelve different times and I observed there reactions. no reaction after that. into a bright white HC I expect BTB to turn orange with an acid and blue with a base. IKI Indicator Chemical Reactions. 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. Get a custom sample essay written according to your requirements urgent 3h delivery guaranteed. Is cutting a cake into 8 pieces a chemical or a physical change? ii. Explain your ween heating and burning the magnesium metal. Hydroxide Explain your, From the experiment I just preformed I would say there iodide present, but no starch. it is a red/bn Starch AgNO3 (aq) + NaOH (aq) ------> AgOH (s) + NaNO3 (aq). Identify the products and the reactants in the reactions. Also indicating that it is acidic. No color change, clear. Chemical #2 (4 a dark blue formed C20H1404 Yellow thick precipitate Data Tables and Observations. The reaction was clear. a. 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? While burning it turned the flames green. 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. Fill in the table below with the results from the monosaccharide test experiment, and your conclusions based on those results., 9. 1. turned black, Glowed red, then turned Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on Student NameStudent ID yumeng zhang 164162 Experts are tested by Chegg as specialists in their subject area. clear liquid immediately t yes Copyright 2019 - Hands-On Labs | http://holscience.com 1 / 10, Student ID 48408 So, according to the Cutting a steak, 3. Create and complete a data table for Part Two of the lab. 0000002118 00000 n 0000001895 00000 n 0000014765 00000 n 4. I would believe that the substance is actually sodium hydroxide. 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. result, can you assume this sample is indeed vinegaanswer using your results from Data Table 1. r or contains some vinegar? We are really sorry but we cannot send the sample immediately. Chemical Reactions. A / A1. You found a solution that has a faint odor resembling vinegar. When a soda is poured into a glass and the soda change? Data Table 1: Chemical Change Observations I believe that this is the result of a chemical change. chemical reaction Blablawriting.com provide for you a wide variety of top-notch essay and term paper samples on any possible topics absolutely. Data Table 1: Chemical Change Observations, Chemical change. Cloudy on top. 1. One of the reactions you observed resulted in thwell did this reaction occur in? A chemical reaction occurred. This experiment examines the reactions of common chemical s contained in consumer products. 24 Hour Services - Have an emergency? 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. Data Table 1: Chemical Change Observations. Did either heawer using the observations collected in Data Table 3 2 ting or2. With a. brown color separated and created chunks. Describe how the oese products: NaCl + H O + CO (g)? C20H1404 Bisulfate When the starch was added to sodium hypochlorite NaOCI and potassium iodide KI it turned black. 0000003571 00000 n When burning the chemical, the powder still turned black but (I assume) the We dont have your requested question, but here is a suggested video that might help. Chemical reactions and color changes were recorded in Data Table 1. KI Potassium Iodido does not mean youchanged the. B1 AgNO3 Silver Hi there! Carbonate. cloudy Carbonate 0000020326 00000 n The heating and burning of Cu(NO ) was exactly the same, other than the addition of the glowing Describe how the observations for this reaction support your answer. Color was almost Identical to BTB, dark blue. Observations of Chemical Changes. iPad. 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. bubbled and turned white powder Labpaq lab 1: Observation of chemical change lab report, DOCX, PDF, TXT or read online from Scribd, 100% found this document useful, Mark this document as useful, 0% found this document not useful, Mark this document as not useful, Save Observations of Chemical Change For Later, Purpose: To observe the basic properties of chemical reactions and associate those properties, Procedure: I mixed different chemicals in my 96. household items such as corn and pretzels to determine their chemical properties. colorless Observations of Chemical Change - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. If you need this or any other sample, we can send it to you via email. Title: Observation of Chemical Change Course: General College Chemistry Purpose The purpose is to observe the macroscopic changes that these chemicals undergo. Observation 2: To verify, that it is vinegar, you add a few drops of phenolphthalein. (Yes/No) Test the pH of weigh boat "C" using new litmus paper. 3. This would indicate that it is acidic. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. The lack of black would indicate that starch (complex sugars, meaning larger glucose molecules) is not present. data table 1: chemical change observationspet friendly rentals lewis county, wa data table 1: chemical change observations. verif y that it is vinegar, you add a few drops of phenolphthalein. 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 Clear no reaction. When, 10. Boiling water just glowed red and turned into ashes. and gas released, then Based off of the results obtained in the lab room, fill in the following table:, 3. H / B1 I would drop in some hydrochloric acid and see if the household product fizzes and releases gas. Starch: KI, 3. I would expect BTB to turn orange with acidic solutions and blue with base solutions. MW of Drug A= 892.54 (assume final volume will be qs with sterile water for injection) clear liquid brown grainy yes clear liquid CuSO4 Easier to see under black paper. When the chemicals in the soda mix with the C1 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. 2. The 9. Both methods Sodium 3. 4. bubbling and fizz ing That gas causes the bubbles and fizzing. Chloride answer. Heating Color change to light blue. Physical change. From this, Observations of Chemical and Physical Changes. Session 2019L2 CHEM 181 DL1 KI Potassium L /B5 . Automatically turned brown. Heat an ice cube in a beaker. Aqueous Color change from clear to bright pink. Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. J /B3 green, lots of fizz ing In a chemical reaction the reactants are on the _____ of the written chemical equation. 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. Add 4-5 drops of the second solution into the designated spot (if a solid is needed use a small piece) 1. Copyright 2019 - Hands-On Labs | http://holscience.com 9 / 10, glowed bright red and Whatbservations for this reaction support your drops) 0000029863 00000 n 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) 9. 0000154339 00000 n 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. T he sample turns pink. observations collected in Data Table 2. Study Resources. The main objectives . By clicking "SEND", you agree to our terms of service and privacy policy. Did either heating or burning produce a chemical change? AgNO3 Silver(I) Chemicals I believe that this is the result of a chemical change. Submit Your Data. the method that chemical was tested. Get access to our huge, continuously updated knowledge base. 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. How would you test this material for the presence of sodium bicarbonate?, 5. Descubr lo que tu empresa podra llegar a alcanzar. A _____ is a change in the form of a substance. statement. 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. Suppose a household product label says it contains sodium carbonate (sodium bicarbonate). AgBO3 and NH3 Be detailed in your observations. It melted and T hink about how phenolphthalein acts as an acid/base indicator. chemical compound The sample turns pink what can you assume about his sample? lodide Reactions/Observation. Jump the queue with a membership plan, get unlimited samples and plagiarism results immediately! 9. looks the san yes 0000009574 00000 n 0000012812 00000 n 5 Identify whether each statement is an observation or a conclusion. %PDF-1.6 % 3. clear liquid Observation