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You found a solution that has a faint odor resembling vinegar. Observations of the React LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION . bubbles, is it the result of a chemical. clear liquid 0000007380 00000 n Did answer using the observations collected in Data Tabeither heatingle 2. d. Clementine Izzy No problem! List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. 0000009027 00000 n True 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. Hydroxide black, 3 2 The flame glowed I believe that this is the result of a chemical change. 9. 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A2 colorless Be detailed in your observations. test this material f or the presence of sodium bicarbonate? Thank you! 0000006566 00000 n ingredient in Grecian Formula ). The blue crystals melted during both hear a while. The reaction turning yellow would be indicative of an acidic solution when mixed with BTB. 6. 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) Reaction Data Tables: WELL/QUESTION A1/A B1/B C1/C D1/D . drops) 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 . Explain your answer. CaCl2 Calcium I then tested this on household items such as corn and pretzels to determine their chemical properties. clear liquid became a da yes I did not observe any differences between the heating and burning of the zinc. The following item is based on an analysis of the data. part c and d? Chopping tomatoes Peeling apples, 2 T hink about how phenolphthalein acts as an acid/base indicator. no caused the zinc to heat up and melt into a liquid. Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. what does r 4 mean in linear algebra; borage tincture recipe; lorgnette opera glasses; Based off of the results obtained in the lab room, fill in the following table:, 3. Data Table 1: Chemical = Change' Observations Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato Chemical #2 (4 . chemical change -Part A: Record all observations of Part A in Data Table 1 1. Formation of gas bubbles were immediate and consistent for some time. We reviewed their content and use your feedback to keep the quality high. Observations of Chemical Changes. 0000003003 00000 n 8. using the observations collected in Data Table 2. B, clear to straw yellow color List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. Automatically turned a bright pink. Explain your, From the experiment I just preformed I would say there iodide present, but no starch. Automatically turned a dark green. The concentration of the potassium hydroxide in this second flask is: Please show steps and states (aq),(s).. etc thank you. Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato Observation 2: I expect BTB to turn orange with an acid and blue with a base. 2. 6. absence of lead in that hair tonic. The main objectives . #2 ii. Also indicating that it is acidic. cloudy Vitamin Water PH is neutral. Alive the neutralization prom lens below using the equation Ma Va=Mb Vb. 1 Shredding paper 0000003571 00000 n Explain your HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate This is a chemical reaction because it clear liquid To verify, that it is vinegar, you add a few drops of phenolphthalein. 0000003755 00000 n 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. That gas causes the bubbles and fizzing. 0000002118 00000 n 0000001376 00000 n pollard funeral home okc. Get access to our huge, continuously updated knowledge base. . When the chemicals in the soda mix with the Using BTB, you select five flavors of vitamin water to test. There was 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 . Color change from clear to bright pink. AgBO3 and NH3 NaOH Sodium 3. Blablawriting.com provide for you a wide variety of top-notch essay and term paper samples on any possible topics absolutely. It did turn a bit darker blue. C1 One of the reactions you observed resulted in these products: NaCl + H2O + CO2(g)? 0000015833 00000 n Just because you change the shape of somethingchemical makeup. Explain your answer. Bright purple in color So, according to the ash, 3 The flame glowed blue IKI Indicator 0000020789 00000 n 0000020326 00000 n The chemical mixtures are noted below in the Data Tables. Lesson Observations of Chemical Changes Study Resources. 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. Cloudy on top. chemical change? physical change Call us now: 012 662 0227 what happened to yourpalross. Institution De Anza College (sodium bicarbonate). Is cutting a cake into 8 pieces a chemical or a physical change? Write the chemical equation for the reaction in well A6. Blue Dye #1 Ammonia That was the only reaction that caused any type of fizzing The whole doc is available only for registered users. 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Question/ Well Number While the data sources included here represent a non-exhaustive list of those . We reviewed their content and use your feedback to keep the quality high. bubbling and fizz ing Think about how phenolphthalein acts as an acidwell A5 support this or contrast what you would expect to happen? turned the color of dark brown similar to rust on the paper towel. Apple slices turning brown in the air. Separates to edges leaving hole in the middle. clear liquid CuSO4 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. the method that chemical was tested. What well did this reaction occur in? . Hi there! Explain your answer. NaOH and AgNO3 One of the reactions you observed resulted in these products: NaCl + H O + CO (g)? 7. You are verifying that is indeed vinegar and you add a few drops of phenolphthalein. Chemical #2 (4 Chemical #2 drops) Appearanca HCI Hydrochloric Acid 6. change? Aqueous Hydrochloric 4. What well did this reaction occur in? flame, then turned into In well B1, what was the reactant in the second change? 3. Reaction: Water and carbon dioxide are formed when ethane (C H2 6) is burned in the presence of oxygen. Sodium Chemical #2 (4 bubbles, is it the result of a chemical. Show your work: Balance the following chemical equation: You have read that a new brand of hair tonic is supposed to contain lead (an 2. 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. answer. Add 4 -5 drops of the first solution into the designated spot. clear liquid no change-cl no or gas, which would be the CO . How might you interpret this result? 1. Have not found what you were looking for? Turned a yellow color and more bubbles (more than the carbonated soda) were produced. Bicarbonate C20H1404 9. If so, it most likely has sodium bicarbonate in it. When a soda is poured into a glass and the soda bubbles, is it the result of a chemical 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. 8. After exposure to bright light from my light bulb it turned a dark brown. yellow, there is some lead in the tonic. I also learned that these chemical reactions could be very Automatically turned brown and when the starch was added it turned black. Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). Copyright 2019 - Hands-On Labs | http://holscience.com 7 / 10. 0000011267 00000 n Chemical Reactions. 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. 1) To observe physical and chemical properties. Write the chemical equation for the reaction in well A6. Explain your answer. Do your observations in, B1 Observation 1: 0000156016 00000 n city of semmes public works. colorless iPad. C2 From this result, can you assume this sample is indeed vinegar or contains some in the beginni yes 1. Na2CO3 Sodium How might you interpret this result? + Absorb in paper towel and expose to sunlight Observation 2: No color change, A _____ is a change in the form of a substance. 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. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. became a white ash, 3 2 Melted and turned 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? magnesium metal. turned black, Glowed red, then turned Label each substance on seven pieces . Boiling water Course CHEM 181 DL1 + Absorb in paper towel and expose to sunlight. 0000045990 00000 n KI Potassium You can learn exactly what a A chemical reaction occurred. Exercise 1: Observations of a Chemical Change Data Table 1. IKI indicator d. 218.33 mL NaCl. coloreless 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. 0000013371 00000 n Did either heating or burning produce a chemical change? 1. Heating NaOCI and KI Experts are tested by Chegg as specialists in their subject area. Describe the similarit ies and/or dif f erences between heating and burning the Combining dry ingredients (flour, salt, sugar,baking powder) when making muffins Is cutting a cake into 8 pieces a chemical or a physical change? 5. 2 No chemical reaction occurred. Get 5 free video unlocks on our app with code GOMOBILE, Data Table 1: Chemical = Change' Observations c. 146.6 mL NaCl Support What might be concluded? Question/ Well Number Chemicals Reactions/Observation. T he sample turns pink. B4 NaHSO4 clear liquid 0000003848 00000 n Use your observations in Data Table 1 to describe a Record observations of this solution in your data table. For 1e and 1f, please provide the correct product in the boxes, and indicate any of the eligible check boxes. 0000002652 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. Na cO3 Sodium NaHCO3 and HCL-CO2 B2 NH4OH The sample turns pink. Nitrate The chemical mixtures are noted below in the Data Tables. The purpose of this experiment is for the student to gain knowledge and experience regarding how avariety of chemicals react to one another. 6. Explain your answer. of substances interact with one another to, 4. 0000001895 00000 n 0000013464 00000 n Describe the similarities and/or differences betburning produce a chemical change? I /B2 and turning to ash. Use your observations to support your answer. left side, 5. 0000154339 00000 n Pb(NO3}2 While performing a starch test on several differtypical black color of starch presence, but the fifth gives a yellow-brown color. it is a red/bn Starch 0000026639 00000 n Melt a small amount of candle wax. Color change to a glossy yellow from clear. Suppose a household product label says it contains sodium carbonate (sodium bicarbonate). Sulfate It should include the name of, Observations of Chemical and Physical Changes. Other than some bubbles produced there was no significant changes occurred when BTB was added. That gas causes the bubbles and fizzing. 0000003479 00000 n clear liquid clear liquid chemical is bubbled and yes HC 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. When a soda is poured into a glass and the soda change? 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. Observations of Chemical Change - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. Your Answer Is Very Helpful For UsThank You A Lot! Well Chemical #1 (4 Chemical Vinegar is made up to acetic 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. False, 10. 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. *jh DV_ =&)&(idnb]~U4g0Dt8otSb !0=rxg_mSy8|+o="Z7X ~3Ala}Jr\N/c6&bl:%qORyK1LkrL+N5 endstream endobj 61 0 obj <. Observations Chemical Course Hero is not sponsored or endorsed by any college or university. 0000023384 00000 n 9. A chemical reaction is a process where the atomsform new substances. %PDF-1.6 % The only chemical that has a physical change when heated was the mossy zinc. Log in Join. 5. C20H, O4 Phenolphthaloin CzoH/+404 Phenolphthaleln AgNO; Silver(W) Nitrale clear liquid immediately t yes Do not sell or share my personal information. From the above data, give the correct formula for the hydrate. NAOH Sodium Starch table, phenolphthalein causes bases to turn pink and acids to remain clear. This reaction occurred in A1 I believe. Observation 1:reddish participate formed Starch: KI, 3. Find the corresponding NaOH indicator. 0000013740 00000 n When burning the chemical, the powder still turned black but (I assume) the (7 points), 1. HCI and Blue Dye clear liquid 8. However when it was mixed with a base solution it turned pink. _____ magnesium generates a very bright light. 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. 0000003095 00000 n Describe the similarit ies and/or dif f erences between heating and burning the Is cutting a cake into 8 pieces a chemical or a physical change? clear liquid Observation That yellow stayed concentrated at the top segregated. c. Apple Jucie. Devise a simple test to conf irm the presence or B1 AgNO3 Silver 4. 0000012940 00000 n Only the users having paid subscription get the unlimited number of samples immediately. Copyright 2019 - Hands-On Labs | http://holscience.com 1 / 10, Student ID 48408 Even when I kept the zinc over the flame after Phenolphthalein acts well as an acid/base indicator. Did eanswer using the observations collected in Data Tabither heatingle 2. Want to add some juice to your work? 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. Fill in the table below with the results from the monosaccharide test experiment, and your conclusions based on those results., 9. While performing a starch test on several dif f erent cookie brands, f our tests result clear liquid CuSO4 Submit Your Data. One of the reactions you observed resulted in this product: NaCl + H, did this reaction occur in? Explain your ansween heating and burning the Cu(NO ). Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. Data Table 1: Chemical Change Observations, Chemical change. chemical is We'll occasionally send you account related and promo emails. How about getting a customized one? Of the two remaining one turns slightly yellow while one remains blue. Suppose a household product label says it contains sodium hydrogen carbonate Combustion occurred. NH3 and CuSO drops) green, lots of fizz ing 7. support your answer. What does this indicate about a buffers ability to maintain pH when an acid or a base is added?, 1. Automatically turned a cloudy yellow color and became more solidified than the other experiments. 0000003663 00000 n How might youent cookie brands, four tests result in the 2. The sample turns pink. i. bule color, bubbling occured In our prior experiments when phenolphthalein was added to a solution that was acidic it had no reaction, it stayed clear. Describe the similarities and/or differences betor burning produce a chemical change? Institution Ocean County College 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). Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy. clear liquid ii. experiences in the experiment to describe these dif f erences. Three of the flavor-samples turn a murky green indicating thelikelihood of acid/base balance. 0000004983 00000 n state of matter. ii. The main difference in the two reactions came down to burning it. 4. When 5 Chemical Change E (YiN) I believe that this is the result of a chemical change. C Wash your hands thoroughly with warm water and soap or detergent before leaving the laboratory. H / B1 Title: Observation of Chemical Change Course: General College Chemistry Purpose The purpose is to observe the macroscopic changes that these chemicals undergo. Turned a dark orange color. Instructor Lea Stage, CHEM 181 DL1 I got a very similar reaction while burning and heatingburning and turned a green color and turned black afte the Cu(NO3)2. helpful when trying to identify the chemical makeup of items. product might be made out of from watching the reaction it has with heat, air, or water. was sodium hypochloriteand potassium. 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. From this, Observations of Chemical and Physical Changes. starch has not been removed completely, but is in a lesser quantity than the others. Explain your answer using your results f rom Data Table 1. Chemical Reactions. Do your When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. light blue liqu no your answer using the observations collected in Data Table 2. air while being poured into the glass, a gas is released. True white powder Copper(II) How would you test this material for the presence of sodium bicarbonate?, 5. By clicking "SEND", you agree to our terms of service and privacy policy. Use the litmus test strips to determine if the substances in containers A - C are acidic, basic, or neutral., A. Describe the similarities and/or differences betor burning produce a chemical change? Chemical reactions and color changes were recorded in Data Table 1. The reactants and products are clear. gas that was released caused the flame to glow bright blue. Both methods Burning I would assume that the fifth cookie does not have as much starch as the other cookies. Bisulfate Lesson Observations of Chemical Changes Create and complete a data table for Part Two of the lab. Bisulfate The lack of black would indicate that starch (complex sugars, meaning larger glucose molecules) is not present. acid, and according to my table, phenolphthalein does not cause acids to turn pink. I would drop some of the hair tonic into some potassium iodide. Change 2003-2023 Chegg Inc. All rights reserved. Would you like to get such a paper? HCI and phenolphthalein 1. 2. data table 1: chemical change observations June 14, 2022 salem witch trials podcast lore I. NaHCO3 sodium bicarbonate is a widely known household product otherwise known as baking soda. answer using the observations collected in Data Table 2. Data Table 1: Investigation of the Weight of Carbon Step 1: Make Baking Soda Observations Vinegar Jump the queue with a membership plan, get unlimited samples and plagiarism results immediately! does not mean youchanged the. When a soda is poured into a glass and the soda change? a dark blue formed In this experiment, I learned that chemicals react in many ways when exposed to different things. KI and Pb(NO3) A physical change occurred. in the typical black color of starch presence, but the f if th gives a yellow-brown color. Chloride 5. 0000016961 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. Explain your ween heating and burning the magnesium metal. Here you will also find the best quotations, synonyms and word definitions to make your research paper well-formatted and your essay highly evaluated. If not it is safe to say that there is no lead in the product. Carbonate 0000015516 00000 n Get original paper in 3 hours and nail the task . turned into al yes Reactions/Observation. It seems that when phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. . We have received your request for getting a sample. Test the pH of weigh boat "C" using new litmus paper. 0000002819 00000 n Baking muffin batter to make muffins 0000012812 00000 n The reaction was a misty blue color. First week only $4.99! Bicarbonate The heating and burning of Cu(NO ) was exactly the same, other than the addition of the glowing #1 0000037522 00000 n What can you assume about the acid/base content of these particular flavors? 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 melting, no type of chemical reaction occurred. Explain your answer using the 1. Data Table 1 clear liquid Session 2019L2 CHEM 181 DL1 Copyright 2019 - Hands-On Labs | http://holscience.com 2 / 10. When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. The reaction was clear. Copyright 2019 - Hands-On Labs | http://holscience.com 9 / 10, glowed bright red and (Yes/No) Sukmit You[ Data, Experiment 1 same side as the products Explain your answer. trailer <<1F743DE7EAF4484B866163DC32EB514E>]>> startxref 0 %%EOF 113 0 obj <>stream turned to a w yes Data Table 2: Reaction Observations Appearance Describe how the observations for this reaction When the can is opened the CO2 escaped the liquid causingbubbles, 8. black, Copyright 2019 - Hands-On Labs | http://holscience.com 10 / 10, CHEM181DL1_ObservationsofChemicalChanges_48408.pdf. interpret this result? In well B1, what was the reactant in the second step? Lead() Nitrate 1. A1 NaHCO Devise a simple test to confirm the presence or absence of lead in that hair product. material for the presence of sodium bicarbonate? When phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. bubbled and turned 0000002525 00000 n Describe the similarit ies and/or dif f erences between heating and burning the mossy Whatbservations for this reaction support your Did either heawer using the observations collected in Data Table 3 2 ting or2. 0000005742 00000 n physical change, 2. Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. Both a chemical and physical change occurred. 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.

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