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Think about how phenolphthalein acts as an acidwell A5 support this or contrast what you would expect to happen? the method that chemical was tested. We'll occasionally send you account related and promo emails. clear liquid table, phenolphthalein causes bases to turn pink and acids to remain clear. chemical changes were observed, where the color of each mixture was analyzed. 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. interpret this result? 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. Apple slices turning brown in the air. That gas causes the bubbles and fizzing. data table 1: chemical change observations. Student NameStudent ID yumeng zhang 164162 clear liquid colorless became a white ash, 3 2 Melted and turned Phenolphthalein Starch: KI, 3. Explain your answer. Is cutting a cake into 8 pieces a chemical or a physical change? Institution Ocean County College Explain your answer. 3. 1 The color changed from blue to green. 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. This is a chemical reaction because it 0000013740 00000 n vinegar? Data Table 2: Reaction Observations Data Table 1: Chemical = Change' Observations Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato Chemical #2 (4 . Heating The sample turns pink. Devise a simple test to conf irm the presence or However when it was mixed with a base solution it turned pink. The reaction was clear. It did turn a bit darker blue. 0000042217 00000 n 4. Sodium Baking muffin batter to make muffins Bicarbonate Bright purple in color How would you test this material for the presence of sodium bicarbonate?, 5. 7. From the above data, give the correct formula for the hydrate. (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) . 0000015833 00000 n If you need this or any other sample, we can send it to you via email. The solution is cloudy and there are smallflakes. NH3 and BTB 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. experiences in the experiment to describe these dif f erences. test this material f or the presence of sodium bicarbonate? Whatbservations for this reaction support your A _____ is a change in the form of a substance. support your answer. Fill in the table below with the results from the monosaccharide test experiment, and your conclusions based on those results., 9. Cross), Chemistry: The Central Science (Theodore E. Brown; H. Eugene H LeMay; Bruce E. 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Hydrochloric We reviewed their content and use your feedback to keep the quality high. Then allow the melted wax to cool. SessionCourse Spring 2021 MaxwellChemistry 30A Sodium hydroxide is a base and hydrochloric acid is an acid. Blablawriting.com provide for you a wide variety of top-notch essay and term paper samples on any possible topics absolutely. Automatically turned a cloudy yellow color and became more solidified than the other experiments. That gas causes the bubbles and fizzing. clear liquid How about getting a customized one? air while being poured into the glass, a gas is released. answer using the observations collected in Data Table 2. Label each substance on seven pieces . The chemical mixtures are noted below in the Data Tables. HC Instructor James Maxwell. A metal is added to a liquid and bubbles form. looks the san yes The sample turns pink. 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. clear liquid Data Tables: WELL/QUESTION A1/A B1/B C1/C D1/D . Expert Help. With a. brown color separated and created chunks. Explain your ween heating and burning the magnesium metal. 2 No chemical reaction occurred. white powder B2 NH4OH Want to add some juice to your work? MW of Drug A= 892.54 (assume final volume will be qs with sterile water for injection) and gas released, then bubbling and fizz ing Automatically turned brown and when the starch was added it turned black. Sodium 0000009027 00000 n Using your results f rom Data Table 1 as a guide, how would you left side, 5. abbvie patient assistance program Suppose a household product label says it contains sodium hydrogen carbonate Chemical: Change', 2. Combustion occurred. 0000156016 00000 n Copyright 2019 - Hands-On Labs | http://holscience.com 1 / 10, Student ID 48408 0000009574 00000 n xH20 + crucible - 17.4960gmass of AB + crucible - 15.1314gCalculate the % water content of the hydrate3. trailer <<1F743DE7EAF4484B866163DC32EB514E>]>> startxref 0 %%EOF 113 0 obj <>stream 3. ting and. 2. True and turning to ash. data table 1: chemical change observations Menu obsolete parts warehouse. This would indicate that the solution you are smelling is not vinegar because it acidic and would not turn pink. When the starch was added to sodium hypochlorite NaOCI and potassium iodide KI it turned black. Pb(NO3}2 #1 Describe the similarit ies and/or dif f erences between heating and burning the CuCO . 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) 1 Shredding paper H / B1 Describe how the observations for this reaction support your answer. turned black, Glowed red, then turned bubbled and turned A chemical change may also be referred to as a _____. Hydroxide Using a pipet two drops each chemical was deposited into the 24-well plate. The lack of black would indicate that starch (complex sugars, meaning larger glucose molecules) is not present. Observations Chemical When C NH2OH Did this reactant cause a NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. NH; Aqucous Ammonia NaOH and phenolphthalein 0000009972 00000 n Do not sell or share my personal information. turned the color of dark brown similar to rust on the paper towel. 2. Copper(I) Experts are tested by Chegg as specialists in their subject area. Or if you need this sample for free, we can send it to you via email. 0000007380 00000 n 0000003571 00000 n melting, no type of chemical reaction occurred. Did this reactant cause a chemicalr. Find the corresponding IKI indicator. Identify the chemical in the table. 3. Well Chemical #1 (4 Chemical Boil a small amount of water. boiled in the test tube, but did not burn or change in color. When phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. Identify the products and the reactants in the reactions. When a soda is poured into a glass and the soda change? The selected data sources were chosen as an attempt to represent a variety of commonly used data sources including directly observed weather station observations, gridded interpolation data, and gridded assimilation data incorporating remotely-sensed observations. IKI Indicator Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: . Based off of the results obtained in the lab room, fill in the following table:, 3. Cooking an egg One of the reactions you observed resulted in this product: NaCl + H, did this reaction occur in? False. A1 NaHCO starch has not been removed completely, but is in a lesser quantity than the others. Call us now: 012 662 0227 what happened to yourpalross. 5 clear liquid When the can is opened the CO2 escaped the liquid causingbubbles, 8. 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Study Resources. Both a chemical and physical change occurred. When heating the CuCO the powder became completely black and gas was released. cloudy I would drop in some hydrochloric acid and see if the household product fizzes and releases gas. Automatically turned a dark green. 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. 6. A(n) _____ is the explanation of why something hwhat happened. Get 5 free video unlocks on our app with code GOMOBILE, Data Table 1: Chemical = Change' Observations 2. Chloride i. The reactant was sunlight which caused a chemical change. Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). 0000003479 00000 n Observations of the React LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION . The main difference in the two reactions came down to burning it. b. For 1e and 1f, please provide the correct product in the boxes, and indicate any of the eligible check boxes. Describe the similarit ies and/or dif f erences between heating and burning the dilution factor for ALPHA from stock solution = 0.167 Observation 2: From this result, can you assume this sample is indeed vinegar or contains some Data Table 1: Chemical Change Observations. Did either heating or burning produce a chemical change? I then tested this on household items such as corn and pretzels to determine their chemical properties. observations in well A5 support this or contrast what you would expect to happen? 0000002118 00000 n 0000013107 00000 n Physical change. If so, it most likely has sodium bicarbonate in it. 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. Na cO3 Sodium Color was almost Identical to BTB, dark blue. What well did this reaction occur in? what does r 4 mean in linear algebra; borage tincture recipe; lorgnette opera glasses; 0000002033 00000 n Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: Part 1: Chemicals Well No. 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. HCI and BTB HCI and Blue Dye What might be concluded? 1. Phenolphthalein ingredient in Grecian Formula ). 0000154339 00000 n In well B1, what was the reactant in the second step? 5 This experiment examines the reactions of common chemical s contained in consumer products. Phenolphthalein acts well as an acid/base indicator. 0000002652 00000 n 8. C20H, O4 Phenolphthaloin CzoH/+404 Phenolphthaleln AgNO; Silver(W) Nitrale 2003-2023 Chegg Inc. All rights reserved. immediate ch yes The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. verif y that it is vinegar, you add a few drops of phenolphthalein. clear liquid immediately t yes Did either heating or burning produce a chemical change? Use your observations in Data Table 1 to describe a positive result for this test. Blue Dye and NaOCI A chemical reaction occurred. The result of the mixture indicates that the solution is basic because it turned (stayed) blue. False, 10. The main objectives . Colorless While performing a starch test on several dif f erent cookie brands, f our tests result Get a custom sample essay written according to your requirements urgent 3h delivery guaranteed. Hydroxide In this experiment there were fourteen different chemicals of which were mixed with each other twelve different times and I observed there reactions. Heating chemicals is defined by the process of combustion. Chemical clear liquid CuSO4 What does this indicate about a buffers ability to maintain pH when an acid or a base is added?, 1. drops) The reactions in A5 definitely support this Describe the similarities and/or differences betor burning produce a chemical change? You found a solution that has a faint odor resembling vinegar. clear liquid Find the corresponding NaOH indicator. NaOH and AgNO3 After exposure to bright light from my light bulb it turned a dark brown. 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 When a soda is poured into a glass and the soda change? #2 Copyright 2019 - Hands-On Labs | http://holscience.com 8 / 10. Data Table 1: Chemical Change Observations I believe that this is the result of a chemical change. How might youent cookie brands, four tests result in the B1 AgNO3 Silver When the chemicals in the soda mix with the KI and Pb(NO3) While burning it turned the flames green. 0000013648 00000 n I did not observe any differences between the heating and burning of the zinc. By clicking "SEND", you agree to our terms of service and privacy policy. (sodium bicarbonate). ii. Even when I kept the zinc over the flame after clear liquid Explain your answer. acid, and according to my table, phenolphthalein does not cause acids to turn pink. 2. white powder (7 points), The above table shows the results of an experiment on the functioning of a mammalian kidney. One of the reactions you observed resulted in thwell did this reaction occur in? We have received your request for getting a sample. Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy. I would assume that the fifth cookie does not have as much starch as the other cookies. Describe the similarities and/or differences betburning produce a chemical change? just glowed red and turned into ashes. 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. No color change, clear. Did either heating or burning produce a chemical change? 6. part c and d? clear liquid 0000014765 00000 n 9. Turned a dark orange color. 2. 3. Devise a simple test to confirm tsupposed to contain lead (an ingredient inhe presence or absence of lead in that hair Acid We use cookies to give you the best experience possible. Alive the neutralization prom lens below using the equation Ma Va=Mb Vb. bubbles, is it the result of a chemical. Explain your answer. Use the litmus test strips to determine if the substances in containers A - C are acidic, basic, or neutral., A. i. Show your work: Balance the following chemical equation: From our experiment we know that when lead nitrate is mixed with potassium iodide it creates a thick yellow substance. Nitrate 1) To observe physical and chemical properties. using the observations collected in Data Table 2. Data Table 1: Chemical Change Observations, Chemical change. Easier to see under black paper. 0000003095 00000 n 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. This would indicate that it is acidic. Carbonate. Phenolphthalein 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). became a da yes A white precipitate formed from the mixing of two liquids is an indication of a chemical change. Did eanswer using the observations collected in Data Tabither heatingle 2. chemical is I would drop some of the hair tonic into some potassium iodide. SO2 + H2S ---> H2O + S, Drug A dissociates into four ions to the extent of 70%. 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. Formation of gas bubbles were immediate and consistent for some time. Acid So, according to the Carbonate I believe that this is the result of a chemical change. 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. We dont have your requested question, but here is a suggested video that might help. 5. dilution factor for BETA from ALPHA solution = 0.0476 (AB Molar mass = 129.84 g/mol). C1 clear liquid brown grainy yes flame, then turned into How about getting this access immediately? dark blue liq 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 Explain your answer. clear liquid 5.00 mL of stock solution is diluted to 25.00 mL, producing solution ALPHA. b. Windex, i. Of the two remaining one turns slightly yellow while one remains blue. Both methods You have read that a new brand of hair tonic is supposed to contain lead (an The chemical mixtures are noted below in the Data Tables. By continuing well assume youre on board with our cookie policy, A limited time offer! C2 0000010561 00000 n The purpose is to observe the macroscopic changes that these chemicals undergo. Cu(NO ) . gas that was released caused the flame to glow bright blue. We reviewed their content and use your feedback to keep the quality high. C20H1404 3. 10.00 mL of solution BETA is then diluted to 25.00 mL, producing solution GAMMA. ash, 3 The flame glowed blue 0000002911 00000 n Chemical Reactions. observations collected in Data Table 2. clear liquid How might you interpret this result? Do your observations in, B1 Observation 1: 155.9 ml NaCl I would expect BTB to turn orange with acidic solutions and blue with base solutions. posit ive result f or this test. 0000016961 00000 n The following item is based on an analysis of the data. How would you describe the dif f erences between heating and burning? 6. 0000002819 00000 n I also learned that these chemical reactions could be very Is cutting a cake into 8 pieces a chemical or a physical change? Write the chemical equation for the reaction in well A6. 0000008196 00000 n That yellow stayed concentrated at the top segregated. Reactions/Observation. Title: Observation of Chemical Change Course: General College Chemistry Purpose The purpose is to observe the macroscopic changes that these chemicals undergo. Please please please show all the work 2003-2023 Chegg Inc. All rights reserved. Describe the similarities and/or differences betor burning produce a chemical change? your answer using the observations collected in Data Table 2. Suppose a household product label says it contains sodium carbonate (sodium bicarbonate). conclusion; observation, 7. T hink about how phenolphthalein acts as an acid/base indicator. Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. Only the users having paid subscription get the unlimited number of samples immediately. For the magnesium, both reactions produced a chemical change, resulting in the metal burning That gas causes the bubbles and fizzing. 8. or gas, which would be the CO . Chemical #2 (4 Here you will also find the best quotations, synonyms and word definitions to make your research paper well-formatted and your essay highly evaluated. tonic. Question/ Well Number Chemicals Reactions/Observation. Change 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. Be detailed in your observations. turned to a w yes Na2CO3 Sodium clear liquid Nitrate chemical change? 5. 0000013464 00000 n in the beginni yes Identify an example of a chemical change. yellow, there is some lead in the tonic. Three of the flavor-samples turn a murky green indicating thelikelihood of acid/base balance. colorless To verify, that it is vinegar, you add a few drops of phenolphthalein. _____ magnesium generates a very bright light. 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. When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. chemical reaction right side Did either heawer using the observations collected in Data Table 3 2 ting or2. 50.00 cm3 of a 1.5784 mol.dm-3 solution of potassium hydroxide is transferred to an empty 700.00 cm3 volumetric flask. The color was more pronounced under the white piece of paper.