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Be detailed in your observations. #1 Then allow the melted wax to cool. The blue crystals melted during both hear a while. Explain your, From the experiment I just preformed I would say there iodide present, but no starch. The caused the zinc to heat up and melt into a liquid. Hydroxide SessionCourse Spring 2021 MaxwellChemistry 30A Experts are tested by Chegg as specialists in their subject area. Sukmit You[ Data, Experiment 1 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). black, 3 2 The flame glowed 0000012940 00000 n
Want to add some juice to your work? Automatically turned brown. Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). 6. immediate ch yes Log in Join. To verifythalein. (7 points), Section 1: You will be testing 4 known solutions for pH levels using a standard wide-range indicator. and turning to ash. Data Table 1: Chemical Change Observations. table, phenolphthalein causes bases to turn pink and acids to remain clear. Chemical #2 (4 product might be made out of from watching the reaction it has with heat, air, or water. To Hydrochloric Physical change. 6. bubbles, is it the result of a chemical. Hydroxide 0000001895 00000 n
light blue liqu no same side as the products 0000026639 00000 n
5. 5. Explain your ansween heating and burning the Cu(NO ). Explain your answer. Sodium What can you assume about the acid/base content of these particular flavors? Observations Data Table 2: Reaction Observations 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. Sodium Create and complete a data table for Part Two of the lab. Institution Ocean County College The color was more pronounced under the white piece of paper. Would you like to get such a paper? True 1. your answer using the observations collected in Data Table 2. Describe the similarit ies and/or dif f erences between heating and burning the CuCO . Copyright 2019 - Hands-On Labs | http://holscience.com 9 / 10, glowed bright red and 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. Explain your answer. Explain your answer using the When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. clear liquid no change-cl no True pollard funeral home okc. Sodium 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! Please please please show all the work True Copyright 2019 - Hands-On Labs | http://holscience.com 2 / 10. Do your observations in, B1 Observation 1: If not it is safe to say that there is no lead in the product. From the above data, give the correct formula for the hydrate. Bicarbonate absence of lead in that hair tonic. While performing a starch test on several dif f erent cookie brands, f our tests result observations in well A5 support this or contrast what you would expect to happen? 5 material for the presence of sodium bicarbonate? 50.00 cm3 of a 1.5784 mol.dm-3 solution of potassium hydroxide is transferred to an empty 700.00 cm3 volumetric flask. Descubr lo que tu empresa podra llegar a alcanzar. A chemical reaction occurred. After exposure to bright light from my light bulb it turned a dark brown. 0000003848 00000 n
bubbling and fizz ing 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 Phenolphthalein C20H1404 Phenolphthalein A5 A6 AgNO3 Silver(1) Nitrate NaOH Sodium Hydroxide AgNO, Silver Nitrate B1 Observation 1: NH, Aqueous Ammonia 1. change? Separates to edges leaving hole in the middle. Well Chemical #1 (4 Chemical 1. Did either heating or burning produce a chemical change? i. + Absorb in paper towel and expose to sunlight Observation 2: No color change, Devise a simple test to conf irm the presence or your answer with observations made and recorded in Data Table 2. 0000045990 00000 n
2003-2023 Chegg Inc. All rights reserved. Explain your answer. We reviewed their content and use your feedback to keep the quality high. Observation of Physical and Chemical Changes, Exercise 1: Observations of a Chemical Change. 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 . 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. Formation of gas bubbles were immediate and consistent for some time. C1 What does this indicate about a buffers ability to maintain pH when an acid or a base is added?, 1. flame, then turned into When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. I would drop in some hydrochloric acid and see if the household product fizzes and releases gas. drops) a. 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. NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. does not mean youchanged the. 0000002118 00000 n
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) (Yes/No) Instructor James Maxwell. The reactions in A5 definitely support this right side First week only $4.99! clear liquid Observation 4. data table 1: chemical change observationspet friendly rentals lewis county, wa data table 1: chemical change observations. 8. 1 Shredding paper The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. Nitrate became a da yes clear liquid The sample turns pink. 0000020326 00000 n
Green Works from Clorox black, Copyright 2019 - Hands-On Labs | http://holscience.com 10 / 10, CHEM181DL1_ObservationsofChemicalChanges_48408.pdf. Color turned brown-looks thicker chemical change conclusion; observation, 7. + Absorb in paper towel and expose to sunlight Aqueous 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. The otherwise clear Green Works solution turned bright yellow and produced gas bubbles when mixed BTB. What well did this reaction occur in? Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. 1. Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on Heating clear liquid brown grainy yes Na cO3 Sodium Get a custom sample essay written according to your requirements urgent 3h delivery guaranteed. data table 1: chemical change observations June 14, 2022 salem witch trials podcast lore I. 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) Boil a small amount of water. There was C Observation 2: Observation 1:reddish participate formed . Identify the products and the reactants in the reactions. light blue liq d. Clementine Izzy You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Explain your answer. Test the pH of weigh boat "C" using new litmus paper. The purpose is to observe the macroscopic changes that these chemicals undergo. 7. 1. 0000156016 00000 n
Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: Part 1: Chemicals Well No. The reactant was sunlight which caused a chemical change. 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. Observations of Chemical Changes. Blablawriting.com provide for you a wide variety of top-notch essay and term paper samples on any possible topics absolutely. 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. Explain your answer. Study Resources. The chemical mixtures are noted below in the Data Tables. Three household products mixed with bromothymol blue (BTB): a. Chemical Reactions. 0000013740 00000 n
KI Potassium Iodido Labpaq lab 1: Observation of chemical change lab report . Suppose a household product label says it contains sodium hydrogen carbonate (sodium. observations collected in Data Table 2. Alive the neutralization prom lens below using the equation Ma Va=Mb Vb. Record observations of this solution in your data table. 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. The heating and burning of Cu(NO ) was exactly the same, other than the addition of the glowing In a chemical reaction the reactants are on the _____ of the written chemical equation. IKI indicator There is no chemical change here, so that only exists a physical change. 1. Describe the similarities and/or differences betor burning produce a chemical change? Use your observations in Data Table 1 to describe a positive result for this test. When ii. chemical compound 1. Which of the four chemicals that was heated produced a physical change? Change 0000003571 00000 n
HC I expect BTB to turn orange with an acid and blue with a base. How might you interpret this result? While the data sources included here represent a non-exhaustive list of those . Chemical Identify an example of a chemical change. Copying is only available for logged-in users, If you need this sample for free, we can send it to you via email. Acid Pb(NO z Load(W) Nltrate I got a very similar reaction while burning and heatingburning and turned a green color and turned black afte the Cu(NO3)2. coloreless Explain your answer. HCI and BTB A1 NaHCO Sorry, but copying text is forbidden on this website. Phenolphthalein drops) How about getting a customized one? Color change to a glossy yellow from clear. Automatically turned a bright pink. 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. 0000002911 00000 n
KI Potassium 5 Explain your The main objectives . 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. yes Other than some bubbles produced there was no significant changes occurred when BTB was added. A4 ii. Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. In this experiment, I learned that chemicals react in many ways when exposed to different things. Is cutting a cake into 8 pieces a chemical or a physical change? This flask is made up to the mark with distilled water and then shaken well. Bright purple in color That yellow stayed concentrated at the top segregated. C2 5. turned to a w yes B2 NH4OH The following item is based on an analysis of the data. Describe the similarit ies and/or dif f erences between heating and burning the One of the reactions you observed resulted in these products: NaCl + H O + CO (g)? You have read that a new brand of hair tonic is Grecian Formula ). 3. Lead() Nitrate result, can you assume this sample is indeed vinegaanswer using your results from Data Table 1. r or contains some vinegar? clear liquid immediately t yes Reaction 0000012055 00000 n
Suppose a household product label says it contains sodium carbonate (sodium bicarbonate). 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. I also learned that these chemical reactions could be very Is cutting a cake into 8 pieces a chemical or a physical change? Course Hero is not sponsored or endorsed by any college or university. (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) . Hydrochloric ting and. 1. 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. The sample turns pink. Turned blue & precipitate formed, at bottom Appearance By clicking "SEND", you agree to our terms of service and privacy policy. A metal is added to a liquid and bubbles form. 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. NH2OH A _____ is a change in the form of a substance. Of the two remaining one turns slightly yellow while one remains blue. Both a chemical and physical change occurred. answer. The result of the mixture indicates that the solution is basic because it turned (stayed) blue. Chemical reactions and color changes were recorded in Data Table 1. In the second step, the reactant was the direct sunlight. (7 points), 1. The sample turns pink what can you assume about his sample? Session 2019L2 CHEM 181 DL1 We'll occasionally send you account related and promo emails. 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. Both methods Cloudy on top. clear liquid became a white ash, 3 2 Melted and turned Describe how the observations for this reaction support your answer. Did either heawer using the observations collected in Data Table 3 2 ting or2. directly over a flame, the magnesium bursts into a bright white light, whereas in the test tube it dark blue liq 0000023384 00000 n
clear liquid immediately t yes clear liquid When the starch was added to sodium hypochlorite NaOCI and potassium iodide KI it turned black. 0000013371 00000 n
NAHSO4 Pb(NO3}2 When the can is opened the CO2 escaped the liquid causingbubbles. For the magnesium, both reactions produced a chemical change, resulting in the metal burning Blue Dye and NaOCI -Part A: Record all observations of Part A in Data Table 1 1. (AB Molar mass = 129.84 g/mol). Did this reactant cause a chemicalr. clear liquid 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. More pronounced with white paper. Bisulfate Reactions/Observation. i. Color change to light blue. How might youent cookie brands, four tests result in the 2. using the observations collected in Data Table 2. + Absorb in paper towel and expose to sunlight. HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate trailer
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xH20 + crucible - 17.4960gmass of AB + crucible - 15.1314gCalculate the % water content of the hydrate3. The reaction was a misty blue color. Baking muffin batter to make muffins 4. no reaction after that. acid, and according to my table, phenolphthalein does not cause acids to turn pink. How would you test this material for the presence of sodium bicarbonate?, 5. This is a chemical reaction because it When phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. A chemical change may also be referred to as a _____. We dont have your requested question, but here is a suggested video that might help. 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.