KI and Pb(NO3) 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 . verif y that it is vinegar, you add a few drops of phenolphthalein. bubbled and turned The lack of black would indicate that starch (complex sugars, meaning larger glucose molecules) is not present. flame when heated. B3 Pb(NO32 Lead clear liquid CaCl2 Calcium Cutting a steak, 3. 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. 7. a dark blue formed Describe the similarit ies and/or dif f erences between heating and burning the Bisulfate Ammonia 2 No chemical reaction occurred. Have not found what you were looking for? physical change, 2. 9. 0000003095 00000 n ii. Jump the queue with a membership plan, get unlimited samples and plagiarism results immediately! 0000006566 00000 n Do your Looked thicker than other liquids. How would you test this material for the presence of sodium bicarbonate?, 5. zinc metal. + Absorb in paper towel and expose to sunlight Observation 2: No color change, NaOH and phenolphthalein Sodium hydroxide is a base and hydrochloric acid is an acid. 0000005742 00000 n ii. Describe the similarit ies and/or dif f erences between heating and burning the mossy looks the san yes When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. Explain your answer. College of DuPage. A chemical change may also be referred to as a _____. Na cO3 Sodium Explain your answer. into a bright white 5 The sample turns pink what can you assume about his sample? 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. Heat an ice cube in a beaker. NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. 0000008196 00000 n 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. When the chemicals in the soda mix with the Phenolphthalein acts well as an acid/base indicator. yes In this experiment, I learned that chemicals react in many ways when exposed to different things. Descubr lo que tu empresa podra llegar a alcanzar. 0000012055 00000 n HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate C1 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. Burning Carbonate. To You are verifying that is indeed vinegar and you add a few drops of phenolphthalein. How might you interpret this result? 1. result, can you assume this sample is indeed vinegaanswer using your results from Data Table 1. r or contains some vinegar? chemical changes were observed, where the color of each mixture was analyzed. Add 4 -5 drops of the first solution into the designated spot. boiled in the test tube, but did not burn or change in color. Chemical reactions and color changes were recorded in Data Table 1. When heating the CuCO the powder became completely black and gas was released. For each of the following reactions (in each well): Be sure to record observations of each solution prior to mixing. Institution De Anza College Chemical He placed 10 drops of each liquid or a small amount of solid (just enough to. No color change, clear. Chopping tomatoes Peeling apples, 2 You found a sample of a solution that has a f aint odor resembling vinegar (an acid). Data Table 1: Chemical Change Observations. 3. Explain your That yellow stayed concentrated at the top segregated. We are really sorry but we cannot send the sample immediately. Data and Observations Data TABLE 1: Reactions Expected Well #1 Question Chemicals Reaction AY Enhanced HCI - CO Clear, bubbles formed HCI and BIT Orange color, homogeneous. light blue liq Blue Dye and NaOCI 1. a. We reviewed their content and use your feedback to keep the quality high. Lead() Nitrate 1. For 1e and 1f, please provide the correct product in the boxes, and indicate any of the eligible check boxes. Physical observations can be used to determine if a chemical change has occurred. Suppose a household product label says it contains sodium hydrogen carbonate (sodium. When, 10. chemical change? Label each substance on seven pieces . Starch: KI, 3. C20H1404 white powder *jh DV_ =&)&(idnb]~U4g0Dt8otSb !0=rxg_mSy8|+o="Z7X ~3Ala}Jr\N/c6&bl:%qORyK1LkrL+N5 endstream endobj 61 0 obj <. Blablawriting.com provide for you a wide variety of top-notch essay and term paper samples on any possible topics absolutely. material for the presence of sodium bicarbonate? 0000045990 00000 n A metal is added to a liquid and bubbles form. Cooking an egg 0000029863 00000 n Phenolphthalein 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. 7. Ammonia You have read that a new brand of hair tonic is supposed to contain lead (an One of the reactions you observed resulted in these products: NaCl + H2O + CO2(g)? ash, 3 The flame glowed blue your answer using the observations collected in Data Table 2. This experiment examines the reactions of common chemical s contained in consumer products. 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. Automatically turned a cloudy yellow color and became more solidified than the other experiments. KI Potassium K /B4 The users without accounts have to wait due to a large waiting list and high demand. This reaction occurred in A1 I believe. Boil a small amount of water. A4 Copper(I) When a soda is poured into a glass and the soda bubbles, is it the result of a chemical (7 points), 1. Observations The only chemical that has a physical change when heated was the mossy zinc. Is cutting a cake into 8 pieces a chemical or a physical change? %PDF-1.6 % 0000003003 00000 n If so, it most likely has sodium bicarbonate in it. 9. This flask is made up to the mark with distilled water and then shaken well. IKI Indicator Automatically turned brown and when the starch was added it turned black. Thank you! False, 10. I would drop in some hydrochloric acid and see if the household product fizzes and releases gas. clear liquid T he sample turns pink. clear liquid Question/ Well Number Chemicals Reactions/Observation. 1. Question: 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) 1. colorless I believe that this is the result of a chemical change. Identify an example of a chemical change. Explain your, From the experiment I just preformed I would say there iodide present, but no starch. 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. 0000001376 00000 n For the magnesium, both reactions produced a chemical change, resulting in the metal burning 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. 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. When phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. Color turned brown-looks thicker IKI indicator We have received your request for getting a sample. (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) . Data Table 1: Chemical Change Observations. 8. physical change The reactant was sunlight which caused a chemical change. 3. clear liquid observations in well A5 support this or contrast what you would expect to happen? Using BTB, you select five flavors of vitamin water to test. change? . Explain your answer. 0000015833 00000 n data table 1: chemical change observations. and the powder turned What can you assume about the acid/base content of these particular flavors? Wash your hands thoroughly with warm water and soap or detergent before leaving the laboratory. Copyright 2019 - Hands-On Labs | http://holscience.com 4 / 10, Copyright 2019 - Hands-On Labs | http://holscience.com 5 / 10. Institution Ocean County College 0000002118 00000 n b. Copyright 2019 - Hands-On Labs | http://holscience.com 2 / 10. using the observations collected in Data Table 2. Condensing vapor Course CHEM 181 DL1 Reaction: Water and carbon dioxide are formed when ethane (C H2 6) is burned in the presence of oxygen. HC 0000004644 00000 n Clear no reaction. B1 AgNO3 Silver List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. i. Your Answer Is Very Helpful For UsThank You A Lot! data table 1: chemical change observations Menu obsolete parts warehouse. Copyright 2019 - Hands-On Labs | http://holscience.com 7 / 10. Copyright 2019 - Hands-On Labs | http://holscience.com 3 / 10, Data Table 1: Chemical Change Observations. Nitrate Instructor Lea Stage, CHEM 181 DL1 False, 6. NH2OH In well B1, what was the reactant in the second change? When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. Identify the chemical in the table. C20H1404 0000012940 00000 n Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato 9. From this (7 points), The above table shows the results of an experiment on the functioning of a mammalian kidney. 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) Devise a simple test to confirm tsupposed to contain lead (an ingredient inhe presence or absence of lead in that hair SO2 + H2S ---> H2O + S, Drug A dissociates into four ions to the extent of 70%. Data Table 1: Chemical = Change' Observations Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato Chemical #2 (4 . drops) The solution is cloudy and there are smallflakes. Devise a simple test to conf irm the presence or Think about how phenolphthalein acts as an acidwell A5 support this or contrast what you would expect to happen? 4. I would assume that the fifth cookie does not have as much starch as the other cookies. clear liquid CuSO4 Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. 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In the second step, the reactant was the direct sunlight. Nitrate The main objectives . 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. Do your observations in, B1 Observation 1: 62.37 mL NaCl I would believe that the substance is actually sodium hydroxide. No problem! Write the chemical equation for the reaction in well A6. Combustion occurred. 0000013740 00000 n lodide Alive the neutralization prom lens below using the equation Ma Va=Mb Vb. It seems that when phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. clear liquid Explain your answer clear liquid brown grainy yes clear liquid Nitrate Did either heating or burning produce a chemical change? 0000154339 00000 n Get original paper in 3 hours and nail the task . Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on Is cutting a cake into 8 pieces a chemical or a physical change? 2. 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. Turned blue & precipitate formed, at bottom 0000014765 00000 n You'll get a detailed solution from a subject matter expert that helps you learn core concepts. ii. Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. 0000002819 00000 n 0000003755 00000 n Chloride While performing a starch test on several dif f erent cookie brands, f our tests result clear liquid Observation 1:reddish participate formed does not mean youchanged the. directly over a flame, the magnesium bursts into a bright white light, whereas in the test tube it B, clear to straw yellow color 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. 3. xH20 + crucible - 17.4960gmass of AB + crucible - 15.1314gCalculate the % water content of the hydrate3. turned black, Glowed red, then turned Coal hypothesis = It activated carbon is added to a beaker with 100mL of water, then it will increase the pH over 48 hours., 1. data table 1: chemical change observationspet friendly rentals lewis county, wa data table 1: chemical change observations. Chemical Change E (YiN) A(n) _____ is the explanation of why something hwhat happened. i. chemical is Blue Dye #1 Cloudy on top. Explain your ween heating and burning the mossy zinc metal. clear liquid This is a chemical reaction because it 10. Just because you change the shape of somethingchemical makeup. 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.