Observations Chemical 6. The main difference in the two reactions came down to burning it. 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 clear liquid light blue liq clear liquid NaOH and phenolphthalein The reactions in A5 definitely support this ash, 3 The flame glowed blue NaOH Sodium Hydroxide Expert Help. 1. We use cookies to give you the best experience possible. turned into al yes Use your observations in Data Table 1 to describe a Institution De Anza College clear liquid In well B1, what was the reactant in the second change? Heating chemicals is defined by the process of combustion. You have read that a new brand of hair tonic is supposed to contain lead (an T he sample turns pink. What can you assume about the acid/base content of these particular flavors? Using BTB, you select five flavors of vitamin water to test. 50.00 cm3 of a 1.5784 mol.dm-3 solution of potassium hydroxide is transferred to an empty 700.00 cm3 volumetric flask. Color change from clear to bright pink. To Data Table 1: Investigation of the Weight of Carbon Step 1: Make Baking Soda Observations Vinegar Color was almost Identical to BTB, dark blue. I would assume that the fifth cookie does not have as much starch as the other cookies. Sodium Other than some bubbles produced there was no significant changes occurred when BTB was added. 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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) Bicarbonate statement. Chopping tomatoes Peeling apples, 2 Appearance The reaction was clear. 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. helpful when trying to identify the chemical makeup of items. To verifythalein. 0000003095 00000 n 5. The solution is cloudy and there are smallflakes. support your answer. dilution factor for BETA from ALPHA solution = 0.0476 One of the reactions you observed resulted in this product: NaCl + H, did this reaction occur in? Combustion occurred. Did either heating or burning produce a chemical change? Nitrate 0000012055 00000 n pollard funeral home okc. Bright purple in color 2. When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. Experts are tested by Chegg as specialists in their subject area. Devise a simple test to confirm tsupposed to contain lead (an ingredient inhe presence or absence of lead in that hair 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. Colorless Would you like to get such a paper? 1 Shredding paper Question/ Well Number 2003-2023 Chegg Inc. All rights reserved. Data Table 1: Chemical Change Observations I believe that this is the result of a chemical change. First week only $4.99! 7. Obsarvation Instructor Lea Stage, CHEM 181 DL1 Only the users having paid subscription get the unlimited number of samples immediately. Pb(NO z Load(W) Nltrate Color change to a glossy yellow from clear. 0000026639 00000 n 9. clear liquid immediately t yes . C20H1404 Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy. One of the reactions you observed resulted in these products: NaCl + H2O + CO2(g)? NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. clear liquid Did answer using the observations collected in Data Tabeither heatingle 2. Copyright 2019 - Hands-On Labs | http://holscience.com 7 / 10. Did this reactant cause a chemicalr. no reaction after that. state of matter. By clicking "SEND", you agree to our terms of service and privacy policy. No color change, clear. NH; Aqucous Ammonia into a bright white Three of the flavor-samples turn a murky green indicating thelikelihood of acid/base balance. Explain your answer using your results f rom Data Table 1. L /B5 Formation of gas bubbles were immediate and consistent for some time. trailer <<1F743DE7EAF4484B866163DC32EB514E>]>> startxref 0 %%EOF 113 0 obj <>stream Acid True Aqueous 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. iPad. Data Table 1: Chemical = Change' Observations Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato Chemical #2 (4 . Describe how the observations for this reaction support your answer. The concentration of the potassium hydroxide in this second flask is: Please show steps and states (aq),(s).. etc thank you. 4. There is no chemical change here, so that only exists a physical change. 0000015833 00000 n (7 points), Section 1: You will be testing 4 known solutions for pH levels using a standard wide-range indicator. 6 SO2 + H2S ---> H2O + S, Drug A dissociates into four ions to the extent of 70%. KI and Pb(NO3) 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? caused the zinc to heat up and melt into a liquid. 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Copyright 2019 - Hands-On Labs | http://holscience.com 1 / 10, Student ID 48408 Do your posit ive result f or this test. Did either heating or burning produce a chemical change? You can learn exactly what a 0000007380 00000 n clear liquid observations in well A5 support this or contrast what you would expect to happen? 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). The purpose is to observe the macroscopic changes that these chemicals undergo. + Absorb in paper towel and expose to sunlight. Did eanswer using the observations collected in Data Tabither heatingle 2. Data Table 1 When heating the CuCO the powder became completely black and gas was released. Describe the similarit ies and/or dif f erences between heating and burning the CuCO . i. This flask is made up to the mark with distilled water and then shaken well. Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: Part 1: Chemicals Well No. Have not found what you were looking for? A chemical reaction is a process where the atomsform new substances. Data Table 1: Chemical Change Observations. cloudy The reactants and products are clear. Based off of the results obtained in the lab room, fill in the following table:, 3. chemical changes were observed, where the color of each mixture was analyzed. That yellow stayed concentrated at the top segregated. B, clear to straw yellow color If not it is safe to say that there is no lead in the product. Chemical #2 (4 When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. Explain your answer. From this ii. 4. Describe how the oese products: NaCl + H O + CO (g)? College of DuPage. 2 No chemical reaction occurred. IKI Indicator immediate ch yes green, the crystals Categorize each change as physical or chemical. b. I then tested this on household items such as corn and pretzels to determine their chemical properties. Just because you change the shape of somethingchemical makeup. Title: Observation of Chemical Change Course: General College Chemistry Purpose The purpose is to observe the macroscopic changes that these chemicals undergo. Do your observations in, B1 Observation 1: 0000013371 00000 n One of the reactions you observed resulted in thwell did this reaction occur in? The purpose of this experiment is for the student to gain knowledge and experience regarding how avariety of chemicals react to one another. In a chemical reaction the reactants are on the _____ of the written chemical equation. Descubr lo que tu empresa podra llegar a alcanzar. does not mean youchanged the. Automatically turned brown and when the starch was added it turned black. bubbles, is it the result of a chemical. same side as the products 1. 5 You have read that a new brand of hair tonic is Grecian Formula ). clear liquid Observation Academic anxiety? Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: . Cutting a steak, 3. Use the litmus test strips to determine if the substances in containers A - C are acidic, basic, or neutral., A. 3. 9. For the magnesium, both reactions produced a chemical change, resulting in the metal burning Na cO3 Sodium List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. Sodium hydroxide is a base and hydrochloric acid is an acid. 0000001895 00000 n Explain your answer 0000002819 00000 n In this experiment there were fourteen different chemicals of which were mixed with each other twelve different times and I observed there reactions. A2 9. Call us now: 012 662 0227 what happened to yourpalross. I /B2 0000003848 00000 n tonic. Lesson Observations of Chemical Changes C1 5. Three household products mixed with bromothymol blue (BTB): a. Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. I would drop some of the hair tonic into some potassium iodide. That gas causes the bubbles and fizzing. data table 1: chemical change observationspet friendly rentals lewis county, wa data table 1: chemical change observations. 1 The color changed from blue to green. This is a chemical reaction because it 0000003479 00000 n clear liquid True experiences in the experiment to describe these dif f erences. There was Add 4-5 drops of the second solution into the designated spot (if a solid is needed use a small piece) chemical is No color change, clear. Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato 0000020789 00000 n 7. clear liquid _____ magnesium generates a very bright light. Chemical change. NaOH: NaOH, Educator app for When burning the chemical, the powder still turned black but (I assume) the Course Hero is not sponsored or endorsed by any college or university. Data Table 1: Chemical Change Observations, Chemical change. your answer using the observations collected in Data Table 2. So, according to the occurred, Copyright 2019 - Hands-On Labs | http://holscience.com 6 / 10. C20H1404 I also learned that these chemical reactions could be very Bisulfate turned the color of dark brown similar to rust on the paper towel. melting, no type of chemical reaction occurred. The result of the mixture indicates that the solution is basic because it turned (stayed) blue. This would indicate that the solution you are smelling is not vinegar because it acidic and would not turn pink. Please please please show all the work 1. 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. Using a pipet two drops each chemical was deposited into the 24-well plate. The *jh DV_ =&)&(idnb]~U4g0Dt8otSb !0=rxg_mSy8|+o="Z7X ~3Ala}Jr\N/c6&bl:%qORyK1LkrL+N5 endstream endobj 61 0 obj <. Reactions/Observation. Copper(I) Is cutting a cake into 8 pieces a chemical or a physical change? Observations of the React LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION . Start your trial now! Acid green, lots of fizz ing 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. it is a red/bn Starch ingredient in Grecian Formula ). 0000002525 00000 n Nitrate ;Cr*P XU#VE-K.I0*^]4Wb!0I4/Z`i*;|usI""00Va6De=/{cuV%'T(6>fElvK5!%~aTbOw4T;u10k/y)'9>{0vv-kf@! Label each substance on seven pieces . magnesium metal. Chemical Change E (YiN) data table 1: chemical change observations. What well did this reaction occur in? Then allow the melted wax to cool. Looked thicker than other liquids. Both methods Baking muffin batter to make muffins We have received your request for getting a sample. Apple slices turning brown in the air. 1. drops) 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. clear liquid Describe the similarit ies and/or dif f erences between heating and burning the mossy Devise a simple test to conf irm the presence or C20H1404 (sodium bicarbonate). Is cutting a cake into 8 pieces a chemical or a physical change? Explain your answer. Is cutting a cake into 8 pieces a chemical or a physical change? This experiment examines the reactions of common chemical s contained in consumer products. I did not observe any differences between the heating and burning of the zinc. 4. 62.37 mL NaCl The whole doc is available only for registered users. Explain your, From the experiment I just preformed I would say there iodide present, but no starch. 0000002911 00000 n I believe that this is the result of a chemical change. NaOH and AgNO3 Physical observations can be used to determine if a chemical change has occurred. 0000008196 00000 n Institution Ocean County College Easier to see under black paper. K /B4 Write the chemical equation for the reaction in well A6. A(n) _____ is the explanation of why something hwhat happened. When phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. Reaction d. Clementine Izzy You found a solution that has a faint odor resembling vinegar. Turned a dark orange color. HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate Which of the four chemicals that was heated produced a physical change? 8. Do not sell or share my personal information. Automatically turned a dark green. It seems that when phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. light blue liq NAHCO3 clear liquid no change-cl no Did this reactant cause a 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 . Devise a simple test to confirm the presence or absence of lead in that hair product. material for the presence of sodium bicarbonate? 0000013740 00000 n The sample turns pink. ting and. Explain your answer using the Record observations of this solution in your data table. Use your Well Chemical #1 (4 Chemical Chemical: Change', 2. To verify, that it is vinegar, you add a few drops of phenolphthalein. False, 10. Aqueous 0000029863 00000 n Labpaq lab 1: Observation of chemical change lab report . #1 Cooking tomatoes to make tomato sauce More pronounced with white paper. Add 4 -5 drops of the first solution into the designated spot. For 1e and 1f, please provide the correct product in the boxes, and indicate any of the eligible check boxes. Suppose a household product label says it contains sodium hydrogen carbonate 155.9 ml NaCl i. Get a custom sample essay written according to your requirements urgent 3h delivery guaranteed. Chemical reactions and color changes were recorded in Data Table 1. Blue Dye #1 From this, Observations of Chemical and Physical Changes. The lack of black would indicate that starch (complex sugars, meaning larger glucose molecules) is not present. 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). You'll get a detailed solution from a subject matter expert that helps you learn core concepts. How would you test this material for the presence of sodium bicarbonate? (AB Molar mass = 129.84 g/mol). 0000012940 00000 n You'll get a detailed solution from a subject matter expert that helps you learn core concepts. or gas, which would be the CO . B4 NaHSO4 Yellow thick precipitate Exercise 1: Observations of a Chemical Change Data Table 1. The chemical mixtures are noted below in the Data Tables. Carbonate. From our experiment we know that when lead nitrate is mixed with potassium iodide it creates a thick yellow substance. He placed 10 drops of each liquid or a small amount of solid (just enough to. of substances interact with one another to, 4. A white precipitate formed from the mixing of two liquids is an indication of a chemical change. B3 Pb(NO32 Lead clear liquid CaCl2 Calcium A / A1. answer using the observations collected in Data Table 2. Explain your answer. Heating The chemical mixtures are noted below in the Data Tables. 8. 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. Chemical #2 (4 Chemical #2 drops) Appearanca HCI Hydrochloric Acid 0000002118 00000 n dilution factor for ALPHA from stock solution = 0.167 Data Tables and Observations. 0000154339 00000 n 10.00 mL of solution BETA is then diluted to 25.00 mL, producing solution GAMMA. When the starch was added to sodium hypochlorite NaOCI and potassium iodide KI it turned black. Explain your answer. 0000001376 00000 n clear liquid Log in Join. 0000003755 00000 n Observation 2: Heat an ice cube in a beaker. was sodium hypochloriteand potassium. From the above data, give the correct formula for the hydrate. Observations using the observations collected in Data Table 2. chemical change? physical change flame, then turned into city of semmes public works. Observation 1:reddish participate formed 0000004304 00000 n NH3 and CuSO Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on HCI and Blue Dye Also indicating that it is acidic. That was the only reaction that caused any type of fizzing You found a sample of a solution that has a f aint odor resembling vinegar (an acid). what does r 4 mean in linear algebra; borage tincture recipe; lorgnette opera glasses; You have read that a new brand of hair tonic is supposed to contain lead (an ingredient in Grecian Formula). Student NameStudent ID yumeng zhang 164162 0000045990 00000 n gas that was released caused the flame to glow bright blue. 6. Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. 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. white powder Question/ Well Number Chemicals Reactions/Observation. Carbonate However when it was mixed with a base solution it turned pink. Vinegar is made up to acetic clear liquid Ammonia table, phenolphthalein causes bases to turn pink and acids to remain clear. How might you interpret this result? colorless Physical change. Color change to light blue. 1. When the can is opened the CO2 escaped the liquid causingbubbles. 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. and gas released, then When a soda is poured into a glass and the soda bubbles, is it the result of a chemical colorless That gas causes the bubbles and fizzing. Did either heating or burning produce a chemical change? Starch: KI, 3. 4. 0000005326 00000 n (7 points), 1. 3. chemical compound clear liquid NaOH Sodium a dark blue formed We reviewed their content and use your feedback to keep the quality high. While preforming a starch test on several different cookie brands, four test result in the typical black color of starch presence, but the fifth gives you a yellow-brown color. Data Table 1: Chemical Change Observations. Explain your answer./base indicator. Observations of Chemical Changes. 2. bubbles, is it the result of a chemical. Bicarbonate What might be concluded? Na2CO3 Sodium Observation of Physical and Chemical Changes, Exercise 1: Observations of a Chemical Change. The blue crystals melted during both hear a while. Explain your answer. ii. Even when I kept the zinc over the flame after 0000003312 00000 n HCI and phenolphthalein AgBO3 and NH3 Phenolphthalein When (7 points), The above table shows the results of an experiment on the functioning of a mammalian kidney. 6. 3. Find the corresponding NaOH indicator. CuSO4 We'll occasionally send you account related and promo emails. MW of Drug A= 892.54 (assume final volume will be qs with sterile water for injection) left side, 5. Session 2019L2 CHEM 181 DL1 and turning to ash. Sodium Explain your answer. In our prior experiments when phenolphthalein was added to a solution that was acidic it had no reaction, it stayed clear. the method that chemical was tested. Sulfate Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. Explain appened, and a(n) _____ is a description of, observation; conclusion The color was more pronounced under the white piece of paper. bubbling and fizz ing One of the reactions you observed resulted in these products: NaCl + H O + CO (g)? Clear no reaction. From this result, can you assume this sample is indeed vinegar or contains some Explain your ansween heating and burning the Cu(NO ). 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. white powder I would believe that the substance is actually sodium hydroxide. That gas causes the bubbles and fizzing. Get access to our huge, continuously updated knowledge base. in the beginni yes Instructor James Maxwell. Bisulfate Sulfate Phenolphthalein acts well as an acid/base indicator. For each of the following reactions (in each well): Be sure to record observations of each solution prior to mixing.
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