Whatbservations for this reaction support your The reaction was a misty blue color. drops) Do your In a chemical reaction the reactants are on the _____ of the written chemical equation. white powder 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. Chemical Change E (YiN) 0000003663 00000 n
K /B4 How much sodium chloride do you need to prepare 250 mL of an ionic solition of drug A with concentration of 3g/100mL using NS for sterile injection? NH3 and BTB When a soda is poured into a glass and the soda change? The whole doc is available only for registered users. 0000015516 00000 n
ii. Suppose a household product label says it contains sodium hydrogen carbonate 0000004983 00000 n
dark blue liq Automatically turned a bright pink. chemical is bubbled and yes Phenolphthalein acts well as an acid/base indicator. flame, then turned into 0000013371 00000 n
Then allow the melted wax to cool. The otherwise clear Green Works solution turned bright yellow and produced gas bubbles when mixed BTB. Boil a small amount of water. physical change, 2. Nitrate flame when heated. KI Potassium Iodido bule color, bubbling occured 0000009574 00000 n
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test this material f or the presence of sodium bicarbonate? Physical observations can be used to determine if a chemical change has occurred. was sodium hypochloriteand potassium. 0000004304 00000 n
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You have read that a new brand of hair tonic is supposed to contain lead (an 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. 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. Get a custom sample essay written according to your requirements urgent 3h delivery guaranteed. Automatically turned a dark green. directly over a flame, the magnesium bursts into a bright white light, whereas in the test tube it Get access to our huge, continuously updated knowledge base. HC That was the only reaction that caused any type of fizzing Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). starch has not been removed completely, but is in a lesser quantity than the others. CuSO4 After exposure to bright light from my light bulb it turned a dark brown. 0000012940 00000 n
Well Chemical #1 (4 Chemical 0000156016 00000 n
Wash your hands thoroughly with warm water and soap or detergent before leaving the laboratory. melting, no type of chemical reaction occurred. Baking muffin batter to make muffins B3 Pb(NO32 Lead clear liquid CaCl2 Calcium Explain your answer. . From this result, can you assume this sample is indeed vinegar or contains some 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. The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. Did this reactant cause a chemicalr. became a white ash, 3 2 Melted and turned 1 Shredding paper NAOH Sodium Chemical reactions and color changes were recorded in Data Table 1. Is cutting a cake into 8 pieces a chemical or a physical change? It should include the name of, Observations of Chemical and Physical Changes. 2. your answer using the observations collected in Data Table 2. (7 points), 1. Clear no reaction. 1. How about getting this access immediately? 10.00 mL of solution BETA is then diluted to 25.00 mL, producing solution GAMMA. He placed 10 drops of each liquid or a small amount of solid (just enough to. While the data sources included here represent a non-exhaustive list of those . does not mean youchanged the. 0000013464 00000 n
answer. We are really sorry but we cannot send the sample immediately. ii. T hink about how phenolphthalein acts as an acid/base indicator. 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. Lead() Nitrate Chemical #2 (4 Chemical #2 drops) Appearanca HCI Hydrochloric Acid data table 1: chemical change observationspet friendly rentals lewis county, wa data table 1: chemical change observations. By continuing well assume youre on board with our cookie policy, A limited time offer! Observations clear liquid Observation You found a sample of a solution that has a fainthat it is vinegar, you add a few drops of phenolpht odor resembling vinegar (an acid). 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. Suppose a household product label says it contains sodium carbonate (sodium bicarbonate). Three of the flavor-samples turn a murky green indicating thelikelihood of acid/base balance. H / B1 city of semmes public works. Blablawriting.com provide for you a wide variety of top-notch essay and term paper samples on any possible topics absolutely. Find the corresponding NaOH indicator. 1. Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: . That gas causes the bubbles and fizzing. appened, and a(n) _____ is a description of, observation; conclusion Chemical #2 (4 turned black, Glowed red, then turned Study Resources. 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. In the second step, the reactant was the direct sunlight. Hydroxide the method that chemical was tested. Hi there! Explain your answer using your results f rom Data Table 1. Observation 2: 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. 50.00 cm3 of a 1.5784 mol.dm-3 solution of potassium hydroxide is transferred to an empty 700.00 cm3 volumetric flask. This reaction occurred in A1 I believe. 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. HC Just because you change the shape of somethingchemical makeup. You have read that a new brand of hair tonic is Grecian Formula ). C2 i. When burning the chemical, the powder still turned black but (I assume) the Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. 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. bubbles, is it the result of a chemical. Observations Chemical Label each substance on seven pieces . 0000012812 00000 n
The main difference in the two reactions came down to burning it. 2. J /B3 clear liquid immediately t yes Melt a small amount of candle wax. experiences in the experiment to describe these dif f erences. 10.00 mL of solution ALPHA is diluted to 25.00 mL, resulting in solution BETA. white powder 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. 0000003571 00000 n
(Yes/No) Test the pH of weigh boat "C" using new litmus paper. 0000003848 00000 n
clear liquid brown grainy yes looks the san yes data table 1: chemical change observations. Separates to edges leaving hole in the middle. What well did this reaction occur in? From this, Observations of Chemical and Physical Changes. 0000003479 00000 n
When the can is opened the CO2 escaped the liquid causingbubbles. I would drop in some hydrochloric acid and see if the household product fizzes and releases gas. 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 only chemical that has a physical change when heated was the mossy zinc. Question/ Well Number Chemicals Reactions/Observation. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Color was almost Identical to BTB, dark blue. The following item is based on an analysis of the data. Chemicals Describe the similarit ies and/or dif f erences between heating and burning the mossy Experts are tested by Chegg as specialists in their subject area. Chemical Reactions. dilution factor for BETA from ALPHA solution = 0.0476 _____ magnesium generates a very bright light. Observations of the React LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION . 0000006566 00000 n
Phenolphthalein 0000002819 00000 n
NH2OH 0000020789 00000 n
This experiment examines the reactions of common chemical s contained in consumer products. Academic anxiety? Pb(NO3}2 clear liquid A chemical reaction is a process where the atomsform new substances. clear liquid You'll get a detailed solution from a subject matter expert that helps you learn core concepts. There was You have read that a new brand of hair tonic is supposed to contain lead (an ingredient in Grecian Formula). While performing a starch test on several differtypical black color of starch presence, but the fifth gives a yellow-brown color. While burning it turned the flames green. 5 Thank you! ash, 3 The flame glowed blue Combining dry ingredients (flour, salt, sugar,baking powder) when making muffins Did this reactant cause a NAHSO4 I did not observe any differences between the heating and burning of the zinc. yes Data Table 1: Chemical Change Observations. NH3 and CuSO Copyright 2019 - Hands-On Labs | http://holscience.com 9 / 10, glowed bright red and Chemical change. Pb(NO z Load(W) Nltrate Coal hypothesis = It activated carbon is added to a beaker with 100mL of water, then it will increase the pH over 48 hours., 1. Get 5 free video unlocks on our app with code GOMOBILE, Data Table 1: Chemical = Change' Observations colorless zinc metal. Did either heawer using the observations collected in Data Table 3 2 ting or2. right side dilution factor for ALPHA from stock solution = 0.167 IKI Indicator HCI and Blue Dye change? Here you will also find the best quotations, synonyms and word definitions to make your research paper well-formatted and your essay highly evaluated. or gas, which would be the CO . That gas causes the bubbles and fizzing. 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. The sample turns pink. Of the two remaining one turns slightly yellow while one remains blue. 2 No chemical reaction occurred. i. We have received your request for getting a sample. clear liquid B, clear to straw yellow color Session 2019L2 CHEM 181 DL1 answer using the observations collected in Data Table 2. and the powder turned The heating and burning of Cu(NO ) was exactly the same, other than the addition of the glowing Data Table 1: Chemical Change Observations I believe that this is the result of a chemical change. *jh DV_ =&)&(idnb]~U4g0Dt8otSb !0=rxg_mSy8|+o="Z7X ~3Ala}Jr\N/c6&bl:%qORyK1LkrL+N5
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<. Green Works from Clorox Starch A1 NaHCO If the substance begins to turn Sodium I /B2 Observation 2 after sunlight: turned darker Describe the similarit ies and/or dif f erences between heating and burning the CuCO . state of matter. 1. The main objectives . 0000003095 00000 n
One of the reactions you observed resulted in these products: NaCl + H2O + CO2(g)? Question/ Well Number Hydrochloric I believe that this is the result of a chemical change. 1. NaHCO3 sodium bicarbonate is a widely known household product otherwise known as baking soda. From this a dark blue formed left side, 5. In this experiment there were fourteen different chemicals of which were mixed with each other twelve different times and I observed there reactions. bubbled and turned black, Copyright 2019 - Hands-On Labs | http://holscience.com 10 / 10, CHEM181DL1_ObservationsofChemicalChanges_48408.pdf. AgNO3 (aq) + NaOH (aq) ------> AgOH (s) + NaNO3 (aq). B1 AgNO3 Silver We dont have your requested question, but here is a suggested video that might help. b. Appearance Instructor James Maxwell. 0000013556 00000 n
For each of the following reactions (in each well): Be sure to record observations of each solution prior to mixing. Chemical: Change', 2. turned to a w yes ingredient in Grecian Formula ). clear liquid The solution is cloudy and there are smallflakes. Sodium hydroxide is a base and hydrochloric acid is an acid. In well B1, what was the reactant in the second change? + Absorb in paper towel and expose to sunlight. In our prior experiments when phenolphthalein was added to a solution that was acidic it had no reaction, it stayed clear. Which of the four chemicals that was heated produced a physical change? 0000005326 00000 n
Condensing vapor Describe the similarities and/or differences betburning produce a chemical change? SO2 + H2S ---> H2O + S, Drug A dissociates into four ions to the extent of 70%. Ammonia Data Tables: WELL/QUESTION A1/A B1/B C1/C D1/D . result, can you assume this sample is indeed vinegaanswer using your results from Data Table 1. r or contains some vinegar? Submit Your Data. Use your observations to support your answestep? Did either heating or burning produce a chemical change? The Did either heating or burning produce a chemical change? clear liquid . 0000037522 00000 n
in the typical black color of starch presence, but the f if th gives a yellow-brown color. green, lots of fizz ing The reactant was sunlight which caused a chemical change. Bisulfate NaOH: NaOH, Educator app for caused the zinc to heat up and melt into a liquid. -Part A: Record all observations of Part A in Data Table 1 1. False. Both a chemical and physical change occurred. 3. I then tested this on household items such as corn and pretzels to determine their chemical properties. 3. Burning When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. Is cutting a cake into 8 pieces a chemical or a physical change? 9. Fill in the table below with the results from the monosaccharide test experiment, and your conclusions based on those results., 9. Chemical Reactions. Describe how the observations for this reaction support your answer. colorless IKI indicator clear liquid immediately t yes Exercise 1: Observations of a Chemical Change Data Table 1. Sulfate Explain your ansween heating and burning the Cu(NO ). Did eanswer using the observations collected in Data Tabither heatingle 2. Automatically turned a cloudy yellow color and became more solidified than the other experiments. I would assume that the fifth cookie does not have as much starch as the other cookies. Nitrate clear liquid Bright purple in color When the starch was added to sodium hypochlorite NaOCI and potassium iodide KI it turned black. 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. Do your observations in, B1 Observation 1: Observation of Physical and Chemical Changes, Exercise 1: Observations of a Chemical Change. Describe how the observations for this reaction clear liquid no change-cl no d. 218.33 mL NaCl. 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.