From this When burning the chemical, the powder still turned black but (I assume) the ii. ting and. Suppose a household product label says it contains sodium hydrogen carbonate Combustion occurred. Please please please show all the work 60 0 obj <> endobj xref 60 54 0000000016 00000 n Only the users having paid subscription get the unlimited number of samples immediately. Using a pipet two drops each chemical was deposited into the 24-well plate. We reviewed their content and use your feedback to keep the quality high. clear liquid CuSO4 0000013556 00000 n Labpaq lab 1: Observation of chemical change lab report . Support Use your observations in Data Table 1 to describe a positive result for this test. Also indicating that it is acidic. Then allow the melted wax to cool. Explain your ween heating and burning the magnesium metal. MW of Drug A= 892.54 (assume final volume will be qs with sterile water for injection) clear liquid T he sample turns pink. HC The reactants and products are clear. 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. We use cookies to give you the best experience possible. 3. No color change, clear. Condensing vapor experiences in the experiment to describe these dif f erences. 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. Data Table 1 6 That gas causes the bubbles and fizzing. clear liquid Explain your answer. 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. Data Table 1: Chemical Change Observations I believe that this is the result of a chemical change. 5 Chemical Change E (YiN) The sample turns pink. 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. Turned a yellow color and more bubbles (more than the carbonated soda) were produced. We'll occasionally send you account related and promo emails. Describe the similarit ies and/or dif f erences between heating and burning the mossy Cooking an egg Melt a small amount of candle wax. right side The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. When Bicarbonate chemical is 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). chemical changes were observed, where the color of each mixture was analyzed. Phenolphthalein What can you assume about the acid/base content of these particular flavors? + Absorb in paper towel and expose to sunlight Observation 2: No color change, First week only $4.99! Experts are tested by Chegg as specialists in their subject area. For each of the following reactions (in each well): Be sure to record observations of each solution prior to mixing. Other than some bubbles produced there was no significant changes occurred when BTB was added. The purpose is to observe the macroscopic changes that these chemicals undergo. Institution Ocean County College Did answer using the observations collected in Data Tabeither heatingle 2. However when it was mixed with a base solution it turned pink. 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. or gas, which would be the CO . 4. Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. A chemical reaction occurred. iPad. How about getting this access immediately? AgNO3 (aq) + NaOH (aq) ------> AgOH (s) + NaNO3 (aq). H / B1 True Be detailed in your observations. (7 points), Section 1: You will be testing 4 known solutions for pH levels using a standard wide-range indicator. From this result, can you assume this sample is indeed vinegar or contains some clear liquid One of the reactions you observed resulted in these products: NaCl + H O + CO (g)? 1. The chemical mixtures are noted below in the Data Tables. b. Windex, i. Chemical Sulfate 1 The color changed from blue to green. 155.9 ml NaCl If so, it most likely has sodium bicarbonate in it. Burning Combining dry ingredients (flour, salt, sugar,baking powder) when making muffins In well B1, what was the reactant in the second change? C To verify, that it is vinegar, you add a few drops of phenolphthalein. Study Resources. Phenolphthalein acts well as an acid/base indicator. Your Answer Is Very Helpful For UsThank You A Lot! What well did this reaction occur in? Of the two remaining one turns slightly yellow while one remains blue. 0000013740 00000 n C2 your answer with observations made and recorded in Data Table 2. 0000004983 00000 n Prepare 750 mL of 6.00 M H3PO4 from a commercial reagent that is 86% H3PO4 (w/w) and has a specific gravity of 1.71. Aqueous If you need this or any other sample, we can send it to you via email. Find the corresponding NaOH indicator. it is a red/bn Starch 0000014765 00000 n part c and d? Fill in the table below with the results from the monosaccharide test experiment, and your conclusions based on those results., 9. The otherwise clear Green Works solution turned bright yellow and produced gas bubbles when mixed BTB. B, clear to straw yellow color 5.00 mL of stock solution is diluted to 25.00 mL, producing solution ALPHA. colorless Observations NH3 and BTB 1. 9. Separates to edges leaving hole in the middle. 0000002118 00000 n Lesson Observations of Chemical Changes List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. Alive the neutralization prom lens below using the equation Ma Va=Mb Vb. Identify the products and the reactants in the reactions. 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. colorless 8. Appearance When the can is opened the CO2 escaped the liquid causingbubbles, 8. We have received your request for getting a sample. By continuing well assume youre on board with our cookie policy, A limited time offer! The result of the mixture indicates that the solution is basic because it turned (stayed) blue. ingredient in Grecian Formula ). colorless Observations of Chemical Changes. The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. 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 . Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. Boiling water The solution is cloudy and there are smallflakes. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. physical change, 2. clear liquid boiled in the test tube, but did not burn or change in color. 0000012940 00000 n AgNO3 Silver(I) While performing a starch test on several differtypical black color of starch presence, but the fifth gives a yellow-brown color. 0000037522 00000 n The reaction was clear. white powder Use your Instructor Lea Stage, CHEM 181 DL1 After adding BTB the color automatically changed to a copper color. The sample turns pink. NAHSO4 Three household products mixed with bromothymol blue (BTB): a. Cooking tomatoes to make tomato sauce Explain your answer. clear liquid Starch Expert Help. One of the reactions you observed resulted in these products: NaCl + H2O + CO2(g)? AgBO3 and NH3 Vitamin Water PH is neutral. Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. Data Table 1: Investigation of the Weight of Carbon Step 1: Make Baking Soda Observations Vinegar Na2CO3 Sodium 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. Acid While burning it turned the flames green. Automatically turned a bright pink. and turning to ash. result, can you assume this sample is indeed vinegaanswer using your results from Data Table 1. r or contains some vinegar? Starch: KI, 3. melting, no type of chemical reaction occurred. 3. Sodium 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. Copyright 2019 - Hands-On Labs | http://holscience.com 2 / 10. drops) Chemical Reactions. This would indicate that it is acidic. Using a pipet two drops each chemical was deposited into the 24-well plate. appened, and a(n) _____ is a description of, observation; conclusion ii. C20H1404 K /B4 Call us now: 012 662 0227 what happened to yourpalross. c. 146.6 mL NaCl Find the corresponding IKI indicator. 0000015516 00000 n 1. A chemical reaction is a process where the atomsform new substances. 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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