material for the presence of sodium bicarbonate? Alive the neutralization prom lens below using the equation Ma Va=Mb Vb. 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. In a chemical reaction the reactants are on the _____ of the written chemical equation. AgBO3 and NH3 B2 NH4OH 0000002118 00000 n dilution factor for ALPHA from stock solution = 0.167 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. In well B1, what was the reactant in the second step? melting, no type of chemical reaction occurred. 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. 0000013371 00000 n 5. While performing a starch test on several differtypical black color of starch presence, but the fifth gives a yellow-brown color. Data Table 2: Reaction Observations For the magnesium, both reactions produced a chemical change, resulting in the metal burning A physical change occurred. i. Physical observations can be used to determine if a chemical change has occurred. Use your observations in Data Table 1 to describe a 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. C1 Explain your ansween heating and burning the Cu(NO ). A / A1. 0000003312 00000 n 5 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. Bicarbonate Turned blue & precipitate formed, at bottom I /B2 Nitrate Describe the similarities and/or differences betor burning produce a chemical change? 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. . Boil a small amount of water. 0000013556 00000 n bubbling and fizz ing Get a custom sample essay written according to your requirements urgent 3h delivery guaranteed. support your answer. Color change from clear to bright pink. tonic. 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. trailer <<1F743DE7EAF4484B866163DC32EB514E>]>> startxref 0 %%EOF 113 0 obj <>stream became a da yes yes The reactions in A5 definitely support this clear liquid immediately t yes Chopping tomatoes Peeling apples, 2 Sodium using the observations collected in Data Table 2. With a. brown color separated and created chunks. Chemical #2 (4 Chemical #2 drops) Appearanca HCI Hydrochloric Acid Start your trial now! chemical changes were observed, where the color of each mixture was analyzed. Both a chemical and physical change occurred. Whatbservations for this reaction support your 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. 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. 0000005326 00000 n When the can is opened the CO2 escaped the liquid causingbubbles, 8. Burning Explain your answer using your results f rom Data Table 1. 0000004644 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. Acid Sorry, but copying text is forbidden on this website. SOLVED:Data Table 1: Chemical = Change' Observations Well - Numerade Write the chemical equation for the reaction in well A6. answer. A chemical change may also be referred to as a _____. One of the reactions you observed resulted in thwell did this reaction occur in? That was the only reaction that caused any type of fizzing I believe that this is the result of a chemical change. Heat an ice cube in a beaker. Observations of Chemical Changes - 1285 Words | Bartleby Student NameStudent ID yumeng zhang 164162 Use your I would believe that the substance is actually sodium hydroxide. data table 1: chemical change observations. False. There was 1. HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate %PDF-1.6 % of substances interact with one another to, 4. 0000001895 00000 n It melted and -Part A: Record all observations of Part A in Data Table 1 1. 0000020789 00000 n light blue liqu no 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. b. Windex, i. 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You found a solution that has a faint odor resembling vinegar. 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. Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: Part 1: Chemicals Well No. B1 AgNO3 Silver HC We reviewed their content and use your feedback to keep the quality high. The following item is based on an analysis of the data. Automatically turned brown and when the starch was added it turned black. Copyright 2019 - Hands-On Labs | http://holscience.com 4 / 10, Copyright 2019 - Hands-On Labs | http://holscience.com 5 / 10. looks the san yes chemical is bubbled and yes L /B5 8. Thank you! Question/ Well Number Na cO3 Sodium Hydroxide 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 Using a pipet two drops each chemical was deposited into the 24-well plate. C20H1404 Copyright 2019 - Hands-On Labs | http://holscience.com 2 / 10. 1. 0000009027 00000 n K /B4 Copyright 2019 - Hands-On Labs | http://holscience.com 8 / 10. You have read that a new brand of hair tonic is Grecian Formula ). 155.9 ml NaCl Is cutting a cake into 8 pieces a chemical or a physical change? 0000013464 00000 n H / B1 0000003571 00000 n KI Potassium Iodido 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. Carbonate Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. Call us now: 012 662 0227 what happened to yourpalross. Observations I would drop some of the hair tonic into some potassium iodide. Explain your answer. Cooking an egg Yellow thick precipitate 0000045990 00000 n 2003-2023 Chegg Inc. All rights reserved. IKI Indicator it is a red/bn Starch A metal is added to a liquid and bubbles form. To 1. A1 NaHCO Data Tables and Observations. (Yes/No) The lack of black would indicate that starch (complex sugars, meaning larger glucose molecules) is not present. Chemical: Change', 2. Vitamin Water PH is neutral. 0000002652 00000 n 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. 1) To observe physical and chemical properties. Copyright 2019 - Hands-On Labs | http://holscience.com 9 / 10, glowed bright red and Observation 2 after sunlight: turned darker Log in Join. Get access to our huge, continuously updated knowledge base. clear liquid immediately t yes The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. Describe how the observations for this reaction support your answer. flame when heated. 0000156016 00000 n immediate ch yes Sulfate When a soda is poured into a glass and the soda change? When the can is opened the CO2 escaped the liquid causingbubbles. List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. When the chemicals in the soda mix with the From our experiment we know that when lead nitrate is mixed with potassium iodide it creates a thick yellow substance. Chemical Reactions. 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. 0000003095 00000 n Melt a small amount of candle wax. Ammonia NaOH Sodium Hydroxide turned black, Glowed red, then turned . Hydrochloric 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 is I also learned that these chemical reactions could be very 7. zinc metal. Identify whether each statement is an observation or a conclusion. Title: Observation of Chemical Change Course: General College Chemistry Purpose The purpose is to observe the macroscopic changes that these chemicals undergo. HCI and Blue Dye Blue Dye #1 Devise a simple test to conf irm the presence or Color turned brown-looks thicker T he sample turns pink. Bright purple in color Explain your answer. Phenolphthalein acts well as an acid/base indicator. We use cookies to give you the best experience possible. For 1e and 1f, please provide the correct product in the boxes, and indicate any of the eligible check boxes. The main difference in the two reactions came down to burning it. Is cutting a cake into 8 pieces a chemical or a physical change? 0000012940 00000 n 9. Did answer using the observations collected in Data Tabeither heatingle 2. What does this indicate about a buffers ability to maintain pH when an acid or a base is added?, 1. Is cutting a cake into 8 pieces a chemical or a physical change? verif y that it is vinegar, you add a few drops of phenolphthalein. state of matter. Bisulfate Find the corresponding NaOH indicator. What might be concluded? 0000020326 00000 n white powder First week only $4.99! Easier to see under black paper. and gas released, then C2 clear liquid brown grainy yes Sodium hydroxide is a base and hydrochloric acid is an acid. (sodium bicarbonate). and the powder turned Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. While performing a starch test on several dif f erent cookie brands, f our tests result Explain your answer./base indicator. Copper(II) ii. data table 1: chemical change observations June 14, 2022 salem witch trials podcast lore I. clear liquid 8. C physical change, 2. When burning the chemical, the powder still turned black but (I assume) the black, 3 2 The flame glowed Did this reactant cause a chemicalr. 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) part c and d? 1. answer using the observations collected in Data Table 2. When the starch was added to sodium hypochlorite NaOCI and potassium iodide KI it turned black. We are really sorry but we cannot send the sample immediately. light blue liq 3. Observations of Chemical Change - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. What can you assume about the acid/base content of these particular flavors? I did not observe any differences between the heating and burning of the zinc. turned into al yes You have read that a new brand of hair tonic is supposed to contain lead (an and turning to ash. Sodium The solution is cloudy and there are smallflakes. 10.00 mL of solution ALPHA is diluted to 25.00 mL, resulting in solution BETA. 0000003848 00000 n Cu(NO ) . AgNO3 (aq) + NaOH (aq) ------> AgOH (s) + NaNO3 (aq). clear liquid table, phenolphthalein causes bases to turn pink and acids to remain clear. Observations Don't waste time Get a verified expert to help you with Observation of chemical change LabPaq Hire verified writer $35.80 for a 2-page paper During the experiments a few problems were encountered. 8. 2. 10. chemical change? 2003-2023 Chegg Inc. All rights reserved. your answer with observations made and recorded in Data Table 2. NAHSO4 Cloudy on top. Condensing vapor 2. Add 4 -5 drops of the first solution into the designated spot. NaHCO3 and HCL-CO2 Na2CO3 Sodium Data Table 1: Chemical Change Observations. What well did this reaction occur in? A chemical reaction occurred. You can learn exactly what a caused the zinc to heat up and melt into a liquid. (7 points), 1. Observation 2: IKI indicator Aqueous 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. No color change, clear. Observation of chemical changes - Assignment Den 3. The reaction was a misty blue color. data table 1: chemical change observationspet friendly rentals lewis county, wa data table 1: chemical change observations. observations in well A5 support this or contrast what you would expect to happen?
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