Test the pH of weigh boat "C" using new litmus paper. a. A(n) _____ is the explanation of why something hwhat happened. 7. (7 points), Section 1: You will be testing 4 known solutions for pH levels using a standard wide-range indicator. NAOH Sodium bubbled and turned From this result, can you assume this sample is indeed vinegar or contains some Sodium The chemical mixtures are noted below in the Data Tables. 7. 0000012940 00000 n and turning to ash. The reaction was a misty blue color. 2. Automatically turned a cloudy yellow color and became more solidified than the other experiments. Sulfate 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. 1) To observe physical and chemical properties. (sodium bicarbonate). 6. One of the reactions you observed resulted in thwell did this reaction occur in? HC Nitrate Have not found what you were looking for? No color change, clear. clear liquid KI Potassium Iodido HCI and phenolphthalein Explain your ween heating and burning the magnesium metal. Observations of Chemical Changes. Descubr lo que tu empresa podra llegar a alcanzar. Identify the products and the reactants in the reactions. Hydrochloric light blue liq 0000003663 00000 n The reactants and products are clear. Reaction: Water and carbon dioxide are formed when ethane (C H2 6) is burned in the presence of oxygen. We are really sorry but we cannot send the sample immediately. 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). colorless 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 . Copyright 2019 - Hands-On Labs | http://holscience.com 9 / 10, glowed bright red and The lack of black would indicate that starch (complex sugars, meaning larger glucose molecules) is not present. Sorry, but copying text is forbidden on this website. Color was almost Identical to BTB, dark blue. T hink about how phenolphthalein acts as an acid/base indicator. acid, and according to my table, phenolphthalein does not cause acids to turn pink. of substances interact with one another to, 4. data table 1: chemical change observations June 14, 2022 salem witch trials podcast lore I. I also learned that these chemical reactions could be very 0000029863 00000 n If you need this or any other sample, we can send it to you via email. Chemical #2 (4 Chemical #2 drops) Appearanca HCI Hydrochloric Acid Acid 0000013648 00000 n NaOH Sodium Automatically turned a dark green. Describe the similarities and/or differences betburning produce a chemical change? You'll get a detailed solution from a subject matter expert that helps you learn core concepts. The blue crystals melted during both hear a while. The main difference in the two reactions came down to burning it. AgBO3 and NH3 physical change, 2. Do not sell or share my personal information. c. 146.6 mL NaCl 0000002819 00000 n NaHCO3 and HCL-CO2 Acid Sodium hydroxide is a base and hydrochloric acid is an acid. chemical is bubbled and yes I would assume that the fifth cookie does not have as much starch as the other cookies. clear liquid I would drop in some hydrochloric acid and see if the household product fizzes and releases gas. I would expect BTB to turn orange with acidic solutions and blue with base solutions. In the second step, the reactant was the direct sunlight. C20H1404 Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. 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. dilution factor for BETA from ALPHA solution = 0.0476 A metal is added to a liquid and bubbles form. Experts are tested by Chegg as specialists in their subject area. 9. turned to a w yes Carbonate. Find the corresponding IKI indicator. 8. Chloride support your answer. The reaction turning yellow would be indicative of an acidic solution when mixed with BTB. white powder 4. Observation 1:reddish participate formed Describe the similarities and/or differences betor burning produce a chemical change? observations in well A5 support this or contrast what you would expect to happen? Of the two remaining one turns slightly yellow while one remains blue. i. Heat an ice cube in a beaker. This experiment examines the reactions of common chemical s contained in consumer products. 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. 4. NH3 and CuSO Color change from clear to bright pink. 5 Question/ Well Number Chemicals Reactions/Observation. 0000012055 00000 n By continuing well assume youre on board with our cookie policy, A limited time offer! 1. List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. Experts are tested by Chegg as specialists in their subject area. 1. Data Table 1 0000005742 00000 n 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. Three household products mixed with bromothymol blue (BTB): a. Bisulfate Start your trial now! When a soda is poured into a glass and the soda bubbles, is it the result of a chemical Did either heating or burning produce a chemical change? 3. Bicarbonate Sulfate Explain your answer. Pb(NO z Load(W) Nltrate Melt a small amount of candle wax. IKI indicator 0000156016 00000 n Heating If so, it most likely has sodium bicarbonate in it. Combustion occurred. Colorless Observations of the React LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION . How might you interpret this result? (Yes/No) black, 3 2 The flame glowed Devise a simple test to conf irm the presence or Heating chemicals is defined by the process of combustion. i. Exercise 1: Observations of a Chemical Change Data Table 1. Na cO3 Sodium in the typical black color of starch presence, but the f if th gives a yellow-brown color. 5 1. Show your work: Balance the following chemical equation: That gas causes the bubbles and fizzing. 6. Clear no reaction. 0000045990 00000 n The sample turns pink. Use your observations in Data Table 1 to describe a positive result for this test. NaOH: NaOH, Educator app for C2 Observation 2: 0000009574 00000 n 7. Did this reactant cause a chemicalr. Support 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. Appearance Is cutting a cake into 8 pieces a chemical or a physical change? was sodium hypochloriteand potassium. 0000154339 00000 n Cooking an egg turned the color of dark brown similar to rust on the paper towel. became a white ash, 3 2 Melted and turned . Using a pipet two drops each chemical was deposited into the 24-well plate. Sukmit You[ Data, Experiment 1 air while being poured into the glass, a gas is released. (C) Observations Type of Change Explanation 1 Clear Clear Clear 24 26 Produced gas, bubbles forms near the edge of the tube Chemical Chemicals (2) . Using a pipet two drops each chemical was deposited into the 24-well plate. NAHSO4 What does this indicate about a buffers ability to maintain pH when an acid or a base is added?, 1. 0000008196 00000 n The chemical mixtures are noted below in the Data Tables. False, 10. A chemical change may also be referred to as a _____. 0000037522 00000 n 10.00 mL of solution ALPHA is diluted to 25.00 mL, resulting in solution BETA. Acid Alive the neutralization prom lens below using the equation Ma Va=Mb Vb. NaOH and phenolphthalein NaOH and AgNO3 clear liquid brown grainy yes . A chemical reaction is a process where the atomsform new substances. 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. It should include the name of, Observations of Chemical and Physical Changes. Copyright 2019 - Hands-On Labs | http://holscience.com 2 / 10. absence of lead in that hair tonic. Explain your answer. i. 0000007380 00000 n Get access to our huge, continuously updated knowledge base. + Absorb in paper towel and expose to sunlight. tonic. When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. After adding BTB the color automatically changed to a copper color. 5. Identify the chemical in the table. Want to add some juice to your work? AgNO3 Silver(I) 1. Use your observations to support your answestep? 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 . chemical compound Explain your answer using your results f rom Data Table 1. Devise a simple test to confirm tsupposed to contain lead (an ingredient inhe presence or absence of lead in that hair Copper(II) 6. Describe how the observations for this reaction NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. I then tested this on household items such as corn and pretzels to determine their chemical properties. This flask is made up to the mark with distilled water and then shaken well. Ammonia 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. 0000004304 00000 n Here you will also find the best quotations, synonyms and word definitions to make your research paper well-formatted and your essay highly evaluated. The following item is based on an analysis of the data. Starch: KI, 3. 8. 4. Using your results f rom Data Table 1 as a guide, how would you Blablawriting.com provide for you a wide variety of top-notch essay and term paper samples on any possible topics absolutely. dilution factor for ALPHA from stock solution = 0.167 B, clear to straw yellow color I would drop some of the hair tonic into some potassium iodide. ingredient in Grecian Formula ). J /B3 test this material f or the presence of sodium bicarbonate? *jh DV_ =&)&(idnb]~U4g0Dt8otSb !0=rxg_mSy8|+o="Z7X ~3Ala}Jr\N/c6&bl:%qORyK1LkrL+N5 endstream endobj 61 0 obj <. You can learn exactly what a Automatically turned brown and when the starch was added it turned black. helpful when trying to identify the chemical makeup of items. 4. Describe the similarit ies and/or dif f erences between heating and burning the C20H1404 coloreless A2 The heating and burning of Cu(NO ) was exactly the same, other than the addition of the glowing white powder When the can is opened the CO2 escaped the liquid causingbubbles. AgNO3 (aq) + NaOH (aq) ------> AgOH (s) + NaNO3 (aq). B1 AgNO3 Silver B4 NaHSO4 Copyright 2019 - Hands-On Labs | http://holscience.com 8 / 10. #2 what does r 4 mean in linear algebra; borage tincture recipe; lorgnette opera glasses; Formation of gas bubbles were immediate and consistent for some time. Did this reactant cause a A1 NaHCO flame when heated. Hydroxide 3. posit ive result f or this test. gas that was released caused the flame to glow bright blue. Data Table 1: Chemical Change Observations. Expert Help. More pronounced with white paper. turned black, Glowed red, then turned Ammonia The concentration of the potassium hydroxide in this second flask is: Please show steps and states (aq),(s).. etc thank you. 0000002033 00000 n 5. 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. _____ magnesium generates a very bright light. False. clear liquid 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. What well did this reaction occur in? Also indicating that it is acidic. Identify whether each statement is an observation or a conclusion. Is cutting a cake into 8 pieces a chemical or a physical change? Explain your ansween heating and burning the Cu(NO ). ii. 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. Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. NH3 and BTB 1. Hi there! Instructor Lea Stage, CHEM 181 DL1 When the starch was added to sodium hypochlorite NaOCI and potassium iodide KI it turned black. Only the users having paid subscription get the unlimited number of samples immediately. The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. When, 10. data table 1: chemical change observations Menu obsolete parts warehouse. To verifythalein. Find the corresponding NaOH indicator. Explain your answer using the Phenolphthalein Based off of the results obtained in the lab room, fill in the following table:, 3. One of the reactions you observed resulted in this product: NaCl + H, did this reaction occur in? NH2OH (7 points), The above table shows the results of an experiment on the functioning of a mammalian kidney. CaCl2 Calcium green, the crystals Be detailed in your observations. zinc metal. Explain your answer a dark blue formed Chemical: Change', 2. directly over a flame, the magnesium bursts into a bright white light, whereas in the test tube it clear liquid I did not observe any differences between the heating and burning of the zinc. into a bright white Institution Ocean County College your answer using the observations collected in Data Table 2. L /B5 answer using the observations collected in Data Table 2. 2. Reaction same side as the products No problem! 0000013464 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. A6 Did either heating or burning produce a chemical change? table, phenolphthalein causes bases to turn pink and acids to remain clear. trailer <<1F743DE7EAF4484B866163DC32EB514E>]>> startxref 0 %%EOF 113 0 obj <>stream When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. Nitrate 9. Just because you change the shape of somethingchemical makeup. You have read that a new brand of hair tonic is Grecian Formula ). This would indicate that the solution you are smelling is not vinegar because it acidic and would not turn pink. Copying is only available for logged-in users, If you need this sample for free, we can send it to you via email. The sample turns pink. data table 1: chemical change observations. In well B1, what was the reactant in the second change? 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. 2. One of the reactions you observed resulted in these products: NaCl + H2O + CO2(g)? Copper(I) Explain your answer. First week only $4.99! 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. 50.00 cm3 of a 1.5784 mol.dm-3 solution of potassium hydroxide is transferred to an empty 700.00 cm3 volumetric flask. it is a red/bn Starch Did either heating or burning produce a chemical change? turned into al yes How about getting a customized one? Lesson Observations of Chemical Changes This would indicate that it is acidic. There is no chemical change here, so that only exists a physical change. Data Table 1: Chemical Change Observations, Chemical change. To verify, that it is vinegar, you add a few drops of phenolphthalein. 1. bubbles, is it the result of a chemical. 0000020326 00000 n The users without accounts have to wait due to a large waiting list and high demand. Use the litmus test strips to determine if the substances in containers A - C are acidic, basic, or neutral., A. yes iPad. Observations of Chemical Change - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. 2003-2023 Chegg Inc. All rights reserved. Institution De Anza College SessionCourse Spring 2021 MaxwellChemistry 30A 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. vinegar? Other than some bubbles produced there was no significant changes occurred when BTB was added. One of the reactions you observed resulted in these products: NaCl + H O + CO (g)? I believe that this is the result of a chemical change. 0000002118 00000 n Physical observations can be used to determine if a chemical change has occurred. 0000020789 00000 n You have read that a new brand of hair tonic is supposed to contain lead (an Bicarbonate NaHCO3 sodium bicarbonate is a widely known household product otherwise known as baking soda. Yellow thick precipitate clear liquid ash, 3 The flame glowed blue NaOCI and KI We reviewed their content and use your feedback to keep the quality high. Describe the similarit ies and/or dif f erences between heating and burning the CuCO . Well Chemical #1 (4 Chemical city of semmes public works. Is cutting a cake into 8 pieces a chemical or a physical change? clear liquid 0000005326 00000 n When phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. When the chemicals in the soda mix with the Add 4 -5 drops of the first solution into the designated spot. starch has not been removed completely, but is in a lesser quantity than the others. Is cutting a cake into 8 pieces a chemical or a physical change? Chemical Reactions. Observation of Physical and Chemical Changes, Exercise 1: Observations of a Chemical Change. 0000001895 00000 n chemical reaction lodide 0000003755 00000 n How would you test this material for the presence of sodium bicarbonate? 0000012812 00000 n The solution is cloudy and there are smallflakes. How about getting this access immediately? %PDF-1.6 % Copyright 2019 - Hands-On Labs | http://holscience.com 4 / 10, Copyright 2019 - Hands-On Labs | http://holscience.com 5 / 10. B2 NH4OH In this experiment there were fourteen different chemicals of which were mixed with each other twelve different times and I observed there reactions. Create and complete a data table for Part Two of the lab. 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. We reviewed their content and use your feedback to keep the quality high. ting and. clear liquid Observation When heating the CuCO the powder became completely black and gas was released. 0000006566 00000 n 0000011267 00000 n 6 physical change 7. abbvie patient assistance program Suppose a household product label says it contains sodium hydrogen carbonate C20H1404 HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate That gas causes the bubbles and fizzing. I /B2 c. Apple Jucie. With a. brown color separated and created chunks. Do your How would you test this material for the presence of sodium bicarbonate?, 5. A / A1. Please please please show all the work Explain your answer. bubbling and fizz ing 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) The reactant was sunlight which caused a chemical change. 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.
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