Yellow thick precipitate In well B1, what was the reactant in the second change? colorless This would indicate that it is acidic. support your answer. With a. brown color separated and created chunks. chemical is bubbled and yes . 1) To observe physical and chemical properties. your answer with observations made and recorded in Data Table 2. d. Clementine Izzy 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? Use your observations in Data Table 1 to describe a positive result for this test. Did this reactant cause a chemicalr. (Yes/No) Heat an ice cube in a beaker. 0000009027 00000 n 8. Devise a simple test to confirm tsupposed to contain lead (an ingredient inhe presence or absence of lead in that hair Add 4 -5 drops of the first solution into the designated spot. Hi there! Appearance the method that chemical was tested. 2. i. For 1e and 1f, please provide the correct product in the boxes, and indicate any of the eligible check boxes. Find the corresponding NaOH indicator. C20H1404 clear liquid 0000013556 00000 n in the typical black color of starch presence, but the f if th gives a yellow-brown color. clear liquid Blue Dye #1 Is cutting a cake into 8 pieces a chemical or a physical change? The users without accounts have to wait due to a large waiting list and high demand. Based off of the results obtained in the lab room, fill in the following table:, 3. After exposure to bright light from my light bulb it turned a dark brown. Use your observations to support your answestep? Only the users having paid subscription get the unlimited number of samples immediately. NaOH and phenolphthalein Clear no reaction. The sample turns pink. coloreless melting, no type of chemical reaction occurred. Session 2019L2 CHEM 181 DL1 NaOH: NaOH, Educator app for starch has not been removed completely, but is in a lesser quantity than the others. or gas, which would be the CO . Phenolphthalein clear liquid 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. 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. Using your results f rom Data Table 1 as a guide, how would you Ammonia 7. The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. 0000013107 00000 n Chemical: Change', 2. Lesson Observations of Chemical Changes Explain your answer. When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. When the can is opened the CO2 escaped the liquid causingbubbles. Categorize each change as physical or chemical. It did turn a bit darker blue. 0000003312 00000 n For the magnesium, both reactions produced a chemical change, resulting in the metal burning Vitamin Water PH is neutral. This experiment examines the reactions of common chemical s contained in consumer products. The reaction was a misty blue color. A chemical change may also be referred to as a _____. Chemical Change E (YiN) clear liquid Turned a dark orange color. 1. 1 The color changed from blue to green. Observation 2 after sunlight: turned darker B2 NH4OH Aqueous Think about how phenolphthalein acts as an acidwell A5 support this or contrast what you would expect to happen? Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato Add 4-5 drops of the second solution into the designated spot (if a solid is needed use a small piece) into a bright white A6 2. Have not found what you were looking for? Log in Join. Sodium In the second step, the reactant was the direct sunlight. Identify an example of a chemical change. 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. clear liquid Write the chemical equation for the reaction in well A6. 0000002033 00000 n Chloride KI Potassium Formation of gas bubbles were immediate and consistent for some time. Copyright 2019 - Hands-On Labs | http://holscience.com 9 / 10, glowed bright red and The only chemical that has a physical change when heated was the mossy zinc. Even when I kept the zinc over the flame after Chopping tomatoes Peeling apples, 2 Use the litmus test strips to determine if the substances in containers A - C are acidic, basic, or neutral., A. Sodium Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. NH; Aqucous Ammonia I would assume that the fifth cookie does not have as much starch as the other cookies. a. Call us now: 012 662 0227 what happened to yourpalross. a dark blue formed Explain your answer using your results f rom Data Table 1. and turning to ash. Explain your answer./base indicator. While performing a starch test on several dif f erent cookie brands, f our tests result NH3 and BTB 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! You found a solution that has a faint odor resembling vinegar. Data Table 1: Chemical Change Observations. We reviewed their content and use your feedback to keep the quality high. air while being poured into the glass, a gas is released. 7. Observations of Chemical Change - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. Chemical Reactions. . 9. c. 146.6 mL NaCl To verify, that it is vinegar, you add a few drops of phenolphthalein. became a da yes The solution is cloudy and there are smallflakes. NaOH Sodium NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. gas that was released caused the flame to glow bright blue. 0000003571 00000 n magnesium metal. Data Table 1: Chemical Change Observations. Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. yellow, there is some lead in the tonic. 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. Copyright 2019 - Hands-On Labs | http://holscience.com 7 / 10. Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy. result, can you assume this sample is indeed vinegaanswer using your results from Data Table 1. r or contains some vinegar? How might youent cookie brands, four tests result in the Carbonate. 1. Academic anxiety? 1 Shredding paper Bicarbonate Institution De Anza College The main objectives . NaOCI and KI 0000003663 00000 n Starch: KI, 3. 1. KI and Pb(NO3) Identify the products and the reactants in the reactions. To verifythalein. Colorless Physical change. and gas released, then Observations of Chemical Changes. In this experiment there were fourteen different chemicals of which were mixed with each other twelve different times and I observed there reactions. B, clear to straw yellow color Question/ Well Number Data Table 1: Chemical = Change' Observations Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato Chemical #2 (4 . From the above data, give the correct formula for the hydrate. Color turned brown-looks thicker absence of lead in that hair tonic. Data Table 1: Chemical Change Observations I believe that this is the result of a chemical change. 5. 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. 50.00 cm3 of a 1.5784 mol.dm-3 solution of potassium hydroxide is transferred to an empty 700.00 cm3 volumetric flask. Turned blue & precipitate formed, at bottom 0000012812 00000 n Observation 2: No color change, clear. + Absorb in paper towel and expose to sunlight Observation 2: No color change, appened, and a(n) _____ is a description of, observation; conclusion 0000003755 00000 n same side as the products dilution factor for BETA from ALPHA solution = 0.0476 ii. Cooking an egg Describe how the oese products: NaCl + H O + CO (g)? 0000003479 00000 n 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. 0000154339 00000 n Data Table 1 turned to a w yes left side, 5. (AB Molar mass = 129.84 g/mol). A chemical reaction occurred. When False, 10. Use your observations to support your answer. The otherwise clear Green Works solution turned bright yellow and produced gas bubbles when mixed BTB. Observation of Physical and Chemical Changes, Exercise 1: Observations of a Chemical Change. We use cookies to give you the best experience possible. b. Windex, i. 1. In a chemical reaction the reactants are on the _____ of the written chemical equation. Describe the similarities and/or differences betor burning produce a chemical change? black, Copyright 2019 - Hands-On Labs | http://holscience.com 10 / 10, CHEM181DL1_ObservationsofChemicalChanges_48408.pdf. Burning Then allow the melted wax to cool. 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. Did either heating or burning produce a chemical change? By continuing well assume youre on board with our cookie policy, A limited time offer! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. AgNO3 Silver(I) Acid 62.37 mL NaCl b. Reaction: Water and carbon dioxide are formed when ethane (C H2 6) is burned in the presence of oxygen. You found a sample of a solution that has a f aint odor resembling vinegar (an acid). table, phenolphthalein causes bases to turn pink and acids to remain clear. SessionCourse Spring 2021 MaxwellChemistry 30A NAHSO4 9. Create and complete a data table for Part Two of the lab. 2. 0000029863 00000 n bubbles, is it the result of a chemical. 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. Bicarbonate clear liquid no change-cl no 3. Phenolphthalein Record observations of this solution in your data table. NaHCO3 and HCL-CO2 He placed 10 drops of each liquid or a small amount of solid (just enough to. city of semmes public works. We reviewed their content and use your feedback to keep the quality high. Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on Suppose a household product label says it contains sodium hydrogen carbonate 10.00 mL of solution BETA is then diluted to 25.00 mL, producing solution GAMMA. Would you like to get such a paper? Did either heating or burning produce a chemical change? What well did this reaction occur in? Chemical Reactions. Did either heating or burning produce a chemical change? Chemical reactions and color changes were recorded in Data Table 1. 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. Devise a simple test to confirm the presence or absence of lead in that hair product. Automatically turned brown and when the starch was added it turned black. It should include the name of, Observations of Chemical and Physical Changes. In this experiment, I learned that chemicals react in many ways when exposed to different things. cloudy Bright purple in color i. 0000001895 00000 n Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). 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 . 0000001376 00000 n What can you assume about the acid/base content of these particular flavors? boiled in the test tube, but did not burn or change in color. Explain your answer CuSO4 experiences in the experiment to describe these dif f erences. Find the corresponding IKI indicator. How might you interpret this result? We have received your request for getting a sample. Chemical change. Identify the chemical in the table. That gas causes the bubbles and fizzing. Expert Help. 10.00 mL of solution ALPHA is diluted to 25.00 mL, resulting in solution BETA. The reactant was sunlight which caused a chemical change. Phenolphthalein The purpose of this experiment is for the student to gain knowledge and experience regarding how avariety of chemicals react to one another. posit ive result f or this test. The sample turns pink. Get 5 free video unlocks on our app with code GOMOBILE, Data Table 1: Chemical = Change' Observations How about getting this access immediately? Observations drops) Is cutting a cake into 8 pieces a chemical or a physical change? Pb(NO3}2 The sample turns pink what can you assume about his sample? Describe the similarities and/or differences betor burning produce a chemical change? 2003-2023 Chegg Inc. All rights reserved. One of the reactions you observed resulted in these products: NaCl + H O + CO (g)? How might you interpret this result? Blue Dye and NaOCI This is a chemical reaction because it light blue liqu no Explain your, From the experiment I just preformed I would say there iodide present, but no starch. Describe how the observations for this reaction 9. Chemical lodide NaHCO3 sodium bicarbonate is a widely known household product otherwise known as baking soda. HCI and phenolphthalein 4. Your Answer Is Very Helpful For UsThank You A Lot! Describe the similarit ies and/or dif f erences between heating and burning the We'll occasionally send you account related and promo emails. clear liquid IKI indicator If you need this or any other sample, we can send it to you via email. it is a red/bn Starch chemical reaction Data Tables and Observations. This reaction occurred in A1 I believe. was sodium hypochloriteand potassium. AgNO3 (aq) + NaOH (aq) ------> AgOH (s) + NaNO3 (aq). HCI and Blue Dye Question/ Well Number Chemicals Reactions/Observation. Bisulfate 6. T he sample turns pink. B4 NaHSO4 C20H1404 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 . Automatically turned brown. T hink about how phenolphthalein acts as an acid/base indicator. 5. white powder 0000016961 00000 n (7 points), 1. Copper(II) 0000005742 00000 n True in the beginni yes Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: . Color was almost Identical to BTB, dark blue. using the observations collected in Data Table 2. College of DuPage. 10. clear liquid Observation clear liquid immediately t yes If so, it most likely has sodium bicarbonate in it. clear liquid Boil a small amount of water. Submit Your Data. 7. Course Hero is not sponsored or endorsed by any college or university. Using a pipet two drops each chemical was deposited into the 24-well plate. . (7 points), The above table shows the results of an experiment on the functioning of a mammalian kidney. AgBO3 and NH3 3. List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. 0000004644 00000 n When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. C1 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. 0000003188 00000 n 5. A / A1. light blue liq NAHCO3 You have read that a new brand of hair tonic is supposed to contain lead (an ingredient in Grecian Formula). Copyright 2019 - Hands-On Labs | http://holscience.com 3 / 10, Data Table 1: Chemical Change Observations. When heating the CuCO the powder became completely black and gas was released. Student NameStudent ID yumeng zhang 164162 C2 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. From this result, can you assume this sample is indeed vinegar or contains some A physical change occurred. physical change NaOH Sodium Hydroxide %PDF-1.6 % 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). HCI and BTB When a soda is poured into a glass and the soda change? This flask is made up to the mark with distilled water and then shaken well. Copper(I) By clicking "SEND", you agree to our terms of service and privacy policy. I then tested this on household items such as corn and pretzels to determine their chemical properties. chemical change? conclusion; observation, 7. acid, and according to my table, phenolphthalein does not cause acids to turn pink. trailer <<1F743DE7EAF4484B866163DC32EB514E>]>> startxref 0 %%EOF 113 0 obj <>stream 0000012055 00000 n -Part A: Record all observations of Part A in Data Table 1 1. and the powder turned 0000004983 00000 n K /B4 Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. That was the only reaction that caused any type of fizzing 0000023384 00000 n green, the crystals clear liquid Aqueous just glowed red and turned into ashes. 0000006566 00000 n I got a very similar reaction while burning and heatingburning and turned a green color and turned black afte the Cu(NO3)2. HC The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. Instructor James Maxwell. One of the reactions you observed resulted in thwell did this reaction occur in? #2 Hydroxide 4. Just because you change the shape of somethingchemical makeup. ii. The following item is based on an analysis of the data. green, lots of fizz ing material for the presence of sodium bicarbonate? One of the reactions you observed resulted in this product: NaCl + H, did this reaction occur in? c. Apple Jucie. Institution Ocean County College observations collected in Data Table 2. You can learn exactly what a Chloride 1. 4. 7. answer. What does this indicate about a buffers ability to maintain pH when an acid or a base is added?, 1. interpret this result? 0000012940 00000 n Did answer using the observations collected in Data Tabeither heatingle 2. 0000026639 00000 n You'll get a detailed solution from a subject matter expert that helps you learn core concepts. directly over a flame, the magnesium bursts into a bright white light, whereas in the test tube it bubbling and fizz ing False, 6. 0000020789 00000 n occurred, Copyright 2019 - Hands-On Labs | http://holscience.com 6 / 10. immediate ch yes of substances interact with one another to, 4. Suppose a household product label says it contains sodium carbonate (sodium bicarbonate). 0000003003 00000 n light blue liq state of matter. Appearance I believe that this is the result of a chemical change. 5 Color change to a glossy yellow from clear. turned into al yes 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. 0000020326 00000 n There was 0000156016 00000 n Describe the similarities and/or differences betburning produce a chemical change? pollard funeral home okc. 0000002911 00000 n clear liquid brown grainy yes part c and d? 0000013648 00000 n clear liquid CuSO4 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. clear liquid 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. looks the san yes 0000002525 00000 n Copyright 2019 - Hands-On Labs | http://holscience.com 1 / 10, Student ID 48408 dilution factor for ALPHA from stock solution = 0.167 MW of Drug A= 892.54 (assume final volume will be qs with sterile water for injection) Copyright 2019 - Hands-On Labs | http://holscience.com 8 / 10. NAOH Sodium I would believe that the substance is actually sodium hydroxide. answer using the observations collected in Data Table 2. Data Tables: WELL/QUESTION A1/A B1/B C1/C D1/D . Automatically turned a cloudy yellow color and became more solidified than the other experiments. colorless A(n) _____ is the explanation of why something hwhat happened. #1 data table 1: chemical change observations. black, 3 2 The flame glowed Chemical #2 (4 iPad. Bisulfate 0000002118 00000 n I would drop in some hydrochloric acid and see if the household product fizzes and releases gas. Identify the products and the reactants in the reactions. 3. Explain your answer. KI Potassium Iodido Do not sell or share my personal information. Vinegar is made up to acetic Explain your NaOH and AgNO3 Carbonate NH2OH Did this reactant cause a Cooking tomatoes to make tomato sauce yes 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. You are verifying that is indeed vinegar and you add a few drops of phenolphthalein. Burning paper 9. Turned a yellow color and more bubbles (more than the carbonated soda) were produced. Nitrate If not it is safe to say that there is no lead in the product. When a soda is poured into a glass and the soda change? 2. 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. Nitrate HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate I did not observe any differences between the heating and burning of the zinc. Show your work: Balance the following chemical equation: 0000002652 00000 n physical change, 2. what does r 4 mean in linear algebra; borage tincture recipe; lorgnette opera glasses; True 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. Test the pH of weigh boat "C" using new litmus paper. The reactions in A5 definitely support this 0000011267 00000 n ting and. no reaction after that. It seems that when phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. Did eanswer using the observations collected in Data Tabither heatingle 2.
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