2 No chemical reaction occurred. or gas, which would be the CO . 0000002525 00000 n 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. 0000015833 00000 n Then allow the melted wax to cool. 6 9. same side as the products 155.9 ml NaCl CaCl2 Calcium List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. NH3 and CuSO I did not observe any differences between the heating and burning of the zinc. 0000002819 00000 n of substances interact with one another to, 4. 2. We'll occasionally send you account related and promo emails. clear liquid no change-cl no A1 NaHCO Use your observations in Data Table 1 to describe a Devise a simple test to confirm tsupposed to contain lead (an ingredient inhe presence or absence of lead in that hair False, 6. Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: . 3. The chemical changes were observed, where the color of each mixture was analyzed. Copyright 2019 - Hands-On Labs | http://holscience.com 1 / 10, Student ID 48408 part c and d? Observations appened, and a(n) _____ is a description of, observation; conclusion Chemical Reactions. Other than some bubbles produced there was no significant changes occurred when BTB was added. Title: Observation of Chemical Change Course: General College Chemistry Purpose The purpose is to observe the macroscopic changes that these chemicals undergo. no reaction after that. Suppose a household product label says it contains sodium carbonate (sodium bicarbonate). 4. 5.00 mL of stock solution is diluted to 25.00 mL, producing solution ALPHA. Academic anxiety? into a bright white Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. True 5. ting and. If so, it most likely has sodium bicarbonate in it. Identify whether each statement is an observation or a conclusion. experiences in the experiment to describe these dif f erences. The sample turns pink. Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. Explain your answer. 3. Copyright 2019 - Hands-On Labs | http://holscience.com 2 / 10. H / B1 _____ magnesium generates a very bright light. clear liquid brown grainy yes In well B1, what was the reactant in the second change? Categorize each change as physical or chemical. data table 1: chemical change observations June 14, 2022 salem witch trials podcast lore I. Reaction clear liquid From this, Observations of Chemical and Physical Changes. became a white ash, 3 2 Melted and turned Data Table 1: Investigation of the Weight of Carbon Step 1: Make Baking Soda Observations Vinegar #2 6. 5 observations collected in Data Table 2. d. 218.33 mL NaCl. yes NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. Condensing vapor Color change to a glossy yellow from clear. c. 146.6 mL NaCl ingredient in Grecian Formula ). clear liquid I would drop some of the hair tonic into some potassium iodide. Copyright 2019 - Hands-On Labs | http://holscience.com 3 / 10, Data Table 1: Chemical Change Observations. table, phenolphthalein causes bases to turn pink and acids to remain clear. Color change to light blue. It melted and I also learned that these chemical reactions could be very Burning 1. 2. 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. MW of Drug A= 892.54 (assume final volume will be qs with sterile water for injection) 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. College of DuPage. 0000045990 00000 n Explain your ansween heating and burning the Cu(NO ). 0000154339 00000 n A / A1. left side, 5. 5. Physical change. However when it was mixed with a base solution it turned pink. The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. J /B3 When a soda is poured into a glass and the soda change? Or if you need this sample for free, we can send it to you via email. Be detailed in your observations. 5. How would you describe the dif f erences between heating and burning? True in the beginni yes 0000002118 00000 n 3. clear liquid Bicarbonate i. Chemical Reactions/Observation. Heating Course Hero is not sponsored or endorsed by any college or university. 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. 0000013556 00000 n The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. Show your work: Balance the following chemical equation: Course CHEM 181 DL1 clear liquid immediately t yes data table 1: chemical change observations. Support The reaction was clear. change? -Part A: Record all observations of Part A in Data Table 1 1. Jump the queue with a membership plan, get unlimited samples and plagiarism results immediately! Nitrate Phenolphthalein You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Thank you! Separates to edges leaving hole in the middle. 0000002652 00000 n Appearance The following item is based on an analysis of the data. A4 physical change Three of the flavor-samples turn a murky green indicating thelikelihood of acid/base balance. 0000037522 00000 n Please please please show all the work Observations of the React LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION . Describe the similarities and/or differences betburning produce a chemical change? yellow, there is some lead in the tonic. Copying is only available for logged-in users, If you need this sample for free, we can send it to you via email. Combustion occurred. The solution is cloudy and there are smallflakes. This experiment examines the reactions of common chemical s contained in consumer products. HC 0000012055 00000 n Only the users having paid subscription get the unlimited number of samples immediately. When the can is opened the CO2 escaped the liquid causingbubbles, 8. Carbonate 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. Question/ Well Number Chemicals Reactions/Observation. Use your observations to support your answer. Hydrochloric in the typical black color of starch presence, but the f if th gives a yellow-brown color. If the substance begins to turn The only chemical that has a physical change when heated was the mossy zinc. 0000012940 00000 n Chemical #2 (4 Chemical #2 drops) Appearanca HCI Hydrochloric Acid clear liquid Observation In well B1, what was the reactant in the second step? occurred, Copyright 2019 - Hands-On Labs | http://holscience.com 6 / 10. HCI and BTB was sodium hypochloriteand potassium. 8. I would believe that the substance is actually sodium hydroxide. Institution De Anza College HC Institution Ocean County College Boiling water Explain your answer. 0000003095 00000 n light blue liq Turned blue & precipitate formed, at bottom Is cutting a cake into 8 pieces a chemical or a physical change? The chemical mixtures are noted below in the Data Tables. 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. Both methods B, clear to straw yellow color dilution factor for BETA from ALPHA solution = 0.0476 drops) What well did this reaction occur in? Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. It did turn a bit darker blue. 0000013464 00000 n Activity 1 Chemical and Physical Changes Make a data table to organize your observations of the matter before and after any change(s) that may occur. 4. 1. Sodium HCI and phenolphthalein Explain your answer. If not it is safe to say that there is no lead in the product. 6. Automatically turned a dark green. While burning it turned the flames green. 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. 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) Student NameStudent ID yumeng zhang 164162 Vinegar is made up to acetic SessionCourse Spring 2021 MaxwellChemistry 30A From this 0000003188 00000 n To verify, that it is vinegar, you add a few drops of phenolphthalein. clear liquid CuSO4 Bisulfate Chemical change. There is no chemical change here, so that only exists a physical change. 24 Hour Services - Have an emergency? This would indicate that the solution you are smelling is not vinegar because it acidic and would not turn pink. chemical is bubbled and yes trailer <<1F743DE7EAF4484B866163DC32EB514E>]>> startxref 0 %%EOF 113 0 obj <>stream 0000023384 00000 n #1 Bisulfate Lead() Nitrate C 0000011267 00000 n does not mean youchanged the. Physical observations can be used to determine if a chemical change has occurred. T hink about how phenolphthalein acts as an acid/base indicator. b. Windex, i. Chemical Reactions. That was the only reaction that caused any type of fizzing One of the reactions you observed resulted in these products: NaCl + H O + CO (g)? Colorless clear liquid Cloudy on top. No problem! Descubr lo que tu empresa podra llegar a alcanzar. white powder data table 1: chemical change observationspet friendly rentals lewis county, wa data table 1: chemical change observations. drops) Describe how the oese products: NaCl + H O + CO (g)? Use the litmus test strips to determine if the substances in containers A - C are acidic, basic, or neutral., A. Sodium hydroxide is a base and hydrochloric acid is an acid. What well did this reaction occur in? xH20 + crucible - 17.4960gmass of AB + crucible - 15.1314gCalculate the % water content of the hydrate3. Acquire a clean spot plate. Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato Chemicals ii. The color was more pronounced under the white piece of paper. The sample turns pink what can you assume about his sample? You have read that a new brand of hair tonic is Grecian Formula ). + Absorb in paper towel and expose to sunlight. Did this reactant cause a chemicalr. + Absorb in paper towel and expose to sunlight Observation 2: No color change, Hydrochloric When a soda is poured into a glass and the soda change? Aqueous NaOH Sodium Hydroxide what does r 4 mean in linear algebra; borage tincture recipe; lorgnette opera glasses; AgNO3 Silver(I) Copper(I) Describe the similarit ies and/or dif f erences between heating and burning the flame, then turned into 0000003663 00000 n vinegar? light blue liqu no You are verifying that is indeed vinegar and you add a few drops of phenolphthalein. 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. the method that chemical was tested. Have not found what you were looking for? B3 Pb(NO32 Lead clear liquid CaCl2 Calcium 2003-2023 Chegg Inc. All rights reserved. 1) To observe physical and chemical properties. Sodium Wash your hands thoroughly with warm water and soap or detergent before leaving the laboratory. Data Table 1: Chemical Change Observations. 9. 1. 10.00 mL of solution ALPHA is diluted to 25.00 mL, resulting in solution BETA. Na cO3 Sodium C1 ;Cr*P XU#VE-K.I0*^]4Wb!0I4/Z`i*;|usI""00Va6De=/{cuV%'T(6>fElvK5!%~aTbOw4T;u10k/y)'9>{0vv-kf@! Sodium Record observations of this solution in your data table. . 6. Explain your answer. Alive the neutralization prom lens below using the equation Ma Va=Mb Vb. 0000009574 00000 n In this experiment, I learned that chemicals react in many ways when exposed to different things. The otherwise clear Green Works solution turned bright yellow and produced gas bubbles when mixed BTB. Explain your answer using your results f rom Data Table 1. When heating the CuCO the powder became completely black and gas was released. Sulfate statement. Chemical Reactions. Get original paper in 3 hours and nail the task . Add 4 -5 drops of the first solution into the designated spot. light blue liq NAHCO3 4. posit ive result f or this test. Chemical reactions and color changes were recorded in Data Table 1. 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. 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. 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. Color change from clear to bright pink. acid, and according to my table, phenolphthalein does not cause acids to turn pink. 7. clear liquid 3. Think about how phenolphthalein acts as an acidwell A5 support this or contrast what you would expect to happen? Instructor James Maxwell. The chemical mixtures are noted below in the Data Tables. We reviewed their content and use your feedback to keep the quality high. bubbles, is it the result of a chemical. 9. 0000029863 00000 n 5. Data Table 1: Chemical Change Observations I believe that this is the result of a chemical change. your answer with observations made and recorded in Data Table 2. Do not sell or share my personal information. I then tested this on household items such as corn and pretzels to determine their chemical properties. Explain 0000003479 00000 n To Explain your answer. Copyright 2019 - Hands-On Labs | http://holscience.com 9 / 10, glowed bright red and chemical is Blablawriting.com provide for you a wide variety of top-notch essay and term paper samples on any possible topics absolutely. Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on NH2OH Whatbservations for this reaction support your chemical change? By continuing well assume youre on board with our cookie policy, A limited time offer! A chemical reaction is a process where the atomsform new substances. There was green, lots of fizz ing NaOH Sodium 0000009027 00000 n Log in Join. using the observations collected in Data Table 2. 0000002033 00000 n Cutting a steak, 3. Find the corresponding IKI indicator. 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. When phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. 0000156016 00000 n Observations of Chemical Change - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. Automatically turned a bright pink. lodide 0000003755 00000 n clear liquid AgBO3 and NH3 1. chemical change black, 3 2 The flame glowed %PDF-1.6 % This would indicate that it is acidic. List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. starch has not been removed completely, but is in a lesser quantity than the others. No color change, clear. The reactants and products are clear. Chloride Clear no reaction. 2. Do your observations in, B1 Observation 1: C2 2. c. Apple Jucie. 0000042217 00000 n Experts are tested by Chegg as specialists in their subject area. Is cutting a cake into 8 pieces a chemical or a physical change? Explain your answer. After exposure to bright light from my light bulb it turned a dark brown. Find the corresponding NaOH indicator. pollard funeral home okc. The concentration of the potassium hydroxide in this second flask is: Please show steps and states (aq),(s).. etc thank you. Did either heating or burning produce a chemical 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 . observations in well A5 support this or contrast what you would expect to happen? When burning the chemical, the powder still turned black but (I assume) the Of the two remaining one turns slightly yellow while one remains blue. Using your results f rom Data Table 1 as a guide, how would you NH3 and BTB looks the san yes Identify the chemical in the table. 50.00 cm3 of a 1.5784 mol.dm-3 solution of potassium hydroxide is transferred to an empty 700.00 cm3 volumetric flask. NaOCI and KI Based off of the results obtained in the lab room, fill in the following table:, 3. CuSO4 What can you assume about the acid/base content of these particular flavors? 0000003003 00000 n 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. Data Table 1: Chemical Change Observations. Acid Just because you change the shape of somethingchemical makeup. C20H1404 C20H1404 Did either heating or burning produce a chemical change? turned black, Glowed red, then turned 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. 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. 1 Shredding paper No color change, clear. Hi there! 0000026639 00000 n and the powder turned 0000014765 00000 n 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. 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). The blue crystals melted during both hear a while. 0000003848 00000 n While the data sources included here represent a non-exhaustive list of those . Chloride 1. Hydroxide Identify an example of a chemical change. Write the chemical equation for the reaction in well A6. bule color, bubbling occured I would assume that the fifth cookie does not have as much starch as the other cookies. 1. A _____ is a change in the form of a substance. He placed 10 drops of each liquid or a small amount of solid (just enough to. Appearance Call us now: 012 662 0227 what happened to yourpalross. Use your observations to support your answestep? A white precipitate formed from the mixing of two liquids is an indication of a chemical change. HCI and Blue Dye answer using the observations collected in Data Table 2. That gas causes the bubbles and fizzing. dark blue liq 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. Data Table 1: Chemical Change Observations, Chemical change. To verifythalein. Blue Dye #1 When the starch was added to sodium hypochlorite NaOCI and potassium iodide KI it turned black. 1. 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. The reactions in A5 definitely support this How might you interpret this result? 0000020789 00000 n b. The reactant was sunlight which caused a chemical change. From this result, can you assume this sample is indeed vinegar or contains some right side 0000002911 00000 n Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. Acid Cu(NO ) . your answer using the observations collected in Data Table 2. That gas causes the bubbles and fizzing. The result of the mixture indicates that the solution is basic because it turned (stayed) blue. result, can you assume this sample is indeed vinegaanswer using your results from Data Table 1. r or contains some vinegar? . How might you interpret this result? data table 1: chemical change observations. bubbles, is it the result of a chemical. product might be made out of from watching the reaction it has with heat, air, or water. (Yes/No) You found a sample of a solution that has a f aint odor resembling vinegar (an acid). 0000001895 00000 n bubbling and fizz ing Did eanswer using the observations collected in Data Tabither heatingle 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. NaHCO3 sodium bicarbonate is a widely known household product otherwise known as baking soda. Combining dry ingredients (flour, salt, sugar,baking powder) when making muffins gas that was released caused the flame to glow bright blue. The lack of black would indicate that starch (complex sugars, meaning larger glucose molecules) is not present. Well Chemical #1 (4 Chemical A2 Hydrochloric Suppose a household product label says it contains sodium hydrogen carbonate (sodium. Label each substance on seven pieces . HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate Identify the products and the reactants in the reactions. d. 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data table 1: chemical change observations