True + Absorb in paper towel and expose to sunlight. 8. Color was almost Identical to BTB, dark blue. 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. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Did this reactant cause a chemicalr. The reactants and products are clear. We are really sorry but we cannot send the sample immediately. Explain your answer using your results f rom Data Table 1. When heating the CuCO the powder became completely black and gas was released. 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) Starch: KI, 3. data table 1: chemical change observationspet friendly rentals lewis county, wa data table 1: chemical change observations. 0000013648 00000 n clear liquid brown grainy yes Describe how the observations for this reaction support your answer. Both methods white powder Record your result in Table 3., b. clear liquid Physical change. Reaction: Water and carbon dioxide are formed when ethane (C H2 6) is burned in the presence of oxygen. Labpaq lab 1: Observation of chemical change lab report . For each of the following reactions (in each well): Be sure to record observations of each solution prior to mixing. part c and d? Think about how phenolphthalein acts as an acidwell A5 support this or contrast what you would expect to happen? After adding BTB the color automatically changed to a copper color. 0000002118 00000 n When a soda is poured into a glass and the soda change? The following item is based on an analysis of the data. Instructor Lea Stage, CHEM 181 DL1 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! 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. in the beginni yes 3. To Course Hero is not sponsored or endorsed by any college or university. B1 AgNO3 Silver 0000006566 00000 n Thank you! While burning it turned the flames green. 7. Bicarbonate 2. 4. 0000003663 00000 n colorless Appearance Change We dont have your requested question, but here is a suggested video that might help. That gas causes the bubbles and fizzing. clear liquid Lesson Observations of Chemical Changes For 1e and 1f, please provide the correct product in the boxes, and indicate any of the eligible check boxes. 6. it is a red/bn Starch Coal hypothesis = It activated carbon is added to a beaker with 100mL of water, then it will increase the pH over 48 hours., 1. 0000001376 00000 n in the typical black color of starch presence, but the f if th gives a yellow-brown color. Question/ Well Number Chemicals Reactions/Observation. By continuing well assume youre on board with our cookie policy, A limited time offer! 4. Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. Looked thicker than other liquids. 62.37 mL NaCl 0000003003 00000 n However when it was mixed with a base solution it turned pink. b. Write the chemical equation for the reaction in well A6. Wash your hands thoroughly with warm water and soap or detergent before leaving the laboratory. 2. lodide Blue Dye and NaOCI Describe the similarities and/or differences betor burning produce a chemical change? Log in Join. clear liquid immediately t yes The color was more pronounced under the white piece of paper. A2 The main objectives . Observations clear liquid Which of the four chemicals that was heated produced a physical change? 2003-2023 Chegg Inc. All rights reserved. If not it is safe to say that there is no lead in the product. 0000004983 00000 n The reaction was clear. 0000002033 00000 n 0000013371 00000 n You have read that a new brand of hair tonic is supposed to contain lead (an When burning the chemical, the powder still turned black but (I assume) the Turned a dark orange color. Do your observations in, B1 Observation 1: xH20 + crucible - 17.4960gmass of AB + crucible - 15.1314gCalculate the % water content of the hydrate3. 0000012812 00000 n It should include the name of, Observations of Chemical and Physical Changes. Explain your answer using the Explain your answer. Identify whether each statement is an observation or a conclusion. Cu(NO ) . observations collected in Data Table 2. Reaction We have received your request for getting a sample. Explain your answer test this material f or the presence of sodium bicarbonate? That gas causes the bubbles and fizzing. colorless I would assume that the fifth cookie does not have as much starch as the other cookies. bubbled whe KI and Pb(NO3) We use cookies to give you the best experience possible. Lead() Nitrate The sample turns pink. 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. clear liquid 3. Well Chemical #1 (4 drops) Chemical #2 (4 drops) Observations: Chemical Change (Y/N) A1 NaHCO3 Sodium Bicarbonate HCl Hydrochloric Acid Bubbled and fizzed to the top. chemical compound The chemical mixtures are noted below in the Data Tables. Using a pipet two drops each chemical was deposited into the 24-well plate. 2. Have not found what you were looking for? Copying is only available for logged-in users, If you need this sample for free, we can send it to you via email. 6 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. Session 2019L2 CHEM 181 DL1 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. 1. #1 Explain your ween heating and burning the magnesium metal. You are verifying that is indeed vinegar and you add a few drops of phenolphthalein. Describe how the oese products: NaCl + H O + CO (g)? 0000016961 00000 n Observation 2 after sunlight: turned darker light blue liq NAHCO3 0000007380 00000 n Bisulfate interpret this result? your answer with observations made and recorded in Data Table 2. 1. To verify, that it is vinegar, you add a few drops of phenolphthalein. (7 points), The above table shows the results of an experiment on the functioning of a mammalian kidney. Sodium drops) 1. Just because you change the shape of somethingchemical makeup. When, 10. Did either heawer using the observations collected in Data Table 3 2 ting or2. In the second step, the reactant was the direct sunlight. Green Works from Clorox Three household products mixed with bromothymol blue (BTB): a. When phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. does not mean youchanged the. 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. left side, 5. While performing a starch test on several dif f erent cookie brands, f our tests result When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. Pb(NO z Load(W) Nltrate Sukmit You[ Data, Experiment 1 Course CHEM 181 DL1 60 0 obj <> endobj xref 60 54 0000000016 00000 n Copper(II) ting and. I would drop in some hydrochloric acid and see if the household product fizzes and releases gas. What does this indicate about a buffers ability to maintain pH when an acid or a base is added?, 1. clear liquid no change-cl no How might you interpret this result? Is cutting a cake into 8 pieces a chemical or a physical change? same side as the products clear liquid Use the litmus test strips to determine if the substances in containers A - C are acidic, basic, or neutral., A. Cooking an egg 1. clear liquid The purpose of this experiment is for the student to gain knowledge and experience regarding how avariety of chemicals react to one another. 1 Shredding paper Suppose a household product label says it contains sodium hydrogen carbonate The sample turns pink. 0000010561 00000 n 10. 0000001895 00000 n drops) H / B1 Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on The only chemical that has a physical change when heated was the mossy zinc. Data Table 1: Chemical Change Observations. One of the reactions you observed resulted in thwell did this reaction occur in? 5 Chemical #2 (4 Chemical #2 drops) Appearanca HCI Hydrochloric Acid Experts are tested by Chegg as specialists in their subject area. data table 1: chemical change observations. Hydroxide 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. Identify the chemical in the table. Explain your answer. bubbling and fizz ing 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. 9. 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. 0000004644 00000 n 0000012940 00000 n . 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The reaction was a misty blue color. In a chemical reaction the reactants are on the _____ of the written chemical equation. verif y that it is vinegar, you add a few drops of phenolphthalein. 2003-2023 Chegg Inc. All rights reserved. This reaction occurred in A1 I believe. Both a chemical and physical change occurred. KI Potassium This would indicate that the solution you are smelling is not vinegar because it acidic and would not turn pink. bubbles, is it the result of a chemical. Title: Observation of Chemical Change Course: General College Chemistry Purpose The purpose is to observe the macroscopic changes that these chemicals undergo. Data Table 1: Investigation of the Weight of Carbon Step 1: Make Baking Soda Observations Vinegar The solution is cloudy and there are smallflakes. 50.00 cm3 of a 1.5784 mol.dm-3 solution of potassium hydroxide is transferred to an empty 700.00 cm3 volumetric flask. Question/ Well Number 0000042217 00000 n The NH2OH dilution factor for ALPHA from stock solution = 0.167 your answer using the observations collected in Data Table 2. Lesson Observations of Chemical Changes right side 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. Describe the similarit ies and/or dif f erences between heating and burning the starch has not been removed completely, but is in a lesser quantity than the others. was sodium hypochloriteand potassium. c. 146.6 mL NaCl clear liquid Start your trial now! 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. When the can is opened the CO2 escaped the liquid causingbubbles, 8. 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 Automatically turned a bright pink. 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Use your observations in Data Table 1 to describe a physical change, 2. 3. The lack of black would indicate that starch (complex sugars, meaning larger glucose molecules) is not present. 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 . 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. 7. NaOCI and KI From the above data, give the correct formula for the hydrate. Easier to see under black paper. 0000013464 00000 n state of matter. The users without accounts have to wait due to a large waiting list and high demand. -Part A: Record all observations of Part A in Data Table 1 1. Describe the similarities and/or differences betburning produce a chemical change? NaOH: NaOH, Educator app for HC NaHCO3 and HCL-CO2 4. NH; Aqucous Ammonia 8. False, 10. Cloudy on top. clear liquid CuSO4 data table 1: chemical change observations. 0000020789 00000 n b. Windex, i. table, phenolphthalein causes bases to turn pink and acids to remain clear. 24 Hour Services - Have an emergency? It melted and 0000003571 00000 n Na2CO3 Sodium The main difference in the two reactions came down to burning it. boiled in the test tube, but did not burn or change in color. . posit ive result f or this test. Did either heating or burning produce a chemical change? Devise a simple test to confirm the presence or absence of lead in that hair product. Heating Blablawriting.com provide for you a wide variety of top-notch essay and term paper samples on any possible topics absolutely. Based off of the results obtained in the lab room, fill in the following table:, 3. 5 Nitrate I expect BTB to turn orange with an acid and blue with a base.