Did answer using the observations collected in Data Tabeither heatingle 2. 6. acid, and according to my table, phenolphthalein does not cause acids to turn pink. The chemical mixtures are noted below in the Data Tables. The main difference in the two reactions came down to burning it. Explain your answer. I would believe that the substance is actually sodium hydroxide. 2003-2023 Chegg Inc. All rights reserved. Find the corresponding NaOH indicator. Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. C Course CHEM 181 DL1 0000005326 00000 n 8. The reaction was clear. Hydroxide data table 1: chemical change observations We are really sorry but we cannot send the sample immediately. Log in Join. 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. 0000002819 00000 n This is a chemical reaction because it Obsarvation Bicarbonate Did either heating or burning produce a chemical 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. 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. 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 Using a pipet two drops each chemical was deposited into the 24-well plate. Describe the similarit ies and/or dif f erences between heating and burning the mossy and turning to ash. The color was more pronounced under the white piece of paper. The reaction turning yellow would be indicative of an acidic solution when mixed with BTB. data table 1: chemical change observations. 0000009027 00000 n turned to a w yes Want to add some juice to your work? K /B4 C20H1404 0000003095 00000 n When a soda is poured into a glass and the soda change? Frontiers | Agreement in extreme precipitation exposure assessment is state of matter. 4. Observation of chemical changes - Assignment Den 9. Separates to edges leaving hole in the middle. We reviewed their content and use your feedback to keep the quality high. zinc metal. Explain your answer. 0000045990 00000 n Describe the similarit ies and/or dif f erences between heating and burning the CuCO . Using your results f rom Data Table 1 as a guide, how would you Did either heating or burning produce a chemical change? 0000002118 00000 n 4. Please please please show all the work left side, 5. Sodium hydroxide is a base and hydrochloric acid is an acid. 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. HC 1. Phenolphthalein How about getting a customized one? Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate Chemical: Change', 2. data table 1: chemical change observations Blablawriting.com provide for you a wide variety of top-notch essay and term paper samples on any possible topics absolutely. light blue liq clear liquid Observation + Absorb in paper towel and expose to sunlight Observation 2: No color change, KI and Pb(NO3) clear liquid 10.00 mL of solution BETA is then diluted to 25.00 mL, producing solution GAMMA. Ammonia HCI and BTB 1. Cu(NO ) . Add 4-5 drops of the second solution into the designated spot (if a solid is needed use a small piece) Expert Help. Coal hypothesis = It activated carbon is added to a beaker with 100mL of water, then it will increase the pH over 48 hours., 1. dilution factor for ALPHA from stock solution = 0.167 Observation 1:reddish participate formed NaHCO3 and HCL-CO2 Chopping tomatoes Peeling apples, 2 became a da yes 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. iPad. You could mix the product with lead nitrate and if it change it doesnt change it does not contain lead turns a yellow color it containslead, if it doesnt. In well B1, what was the reactant in the second change? chemical compound The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. I believe that this is the result of a chemical change. bubbling and fizz ing Explain your ween heating and burning the mossy zinc metal. 1. Question/ Well Number data table 1: chemical change observations Menu obsolete parts warehouse. ingredient in Grecian Formula ). Describe the similarit ies and/or dif f erences between heating and burning the Course Hero is not sponsored or endorsed by any college or university. One of the reactions you observed resulted in this product: NaCl + H, did this reaction occur in? cloudy observations collected in Data Table 2. 0000002525 00000 n 6. i. 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. B2 NH4OH Identify the products and the reactants in the reactions. answer. NH2OH When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. After exposure to bright light from my light bulb it turned a dark brown. Physical change. Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). Describe how the oese products: NaCl + H O + CO (g)? black, 3 2 The flame glowed You have read that a new brand of hair tonic is supposed to contain lead (an ingredient in Grecian Formula). 0000003188 00000 n Data Table 1: Investigation of the Weight of Carbon Step 1: Make Baking Soda Observations Vinegar xH20 + crucible - 17.4960gmass of AB + crucible - 15.1314gCalculate the % water content of the hydrate3. Chemistry 30A Observations of Changes - Studocu does not mean youchanged the. your answer with observations made and recorded in Data Table 2. Sorry, but copying text is forbidden on this website. Clear no reaction. The sample turns pink. 0000029863 00000 n flame when heated. 3. Submit Your Data. bubbles, is it the result of a chemical. PDF Activity 1 Chemical and Physical Changes - Woodstown Three household products mixed with bromothymol blue (BTB): a. 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. magnesium metal. Alive the neutralization prom lens below using the equation Ma Va=Mb Vb. Formation of gas bubbles were immediate and consistent for some time. Color change from clear to bright pink. IKI indicator turned into al yes High Fructose Corn Syrup: A Dangerous Chemical in Food, Interesting Observation of Two People at My Local McDonalds, Ethnographic Observation at Three Starbucks Locations, China Needs Immediate Action to Avoid Future Negative Climate Change, Upward Influence Tactics and Employee Role Change, The role of psychology in climate change debate, Resilience of Human Systems and Climate Change, A History of Racial Discrimination and the Fight for Change, Sexual Harassment: Google Needs to Establish a Sense of Urgency to Change. When a soda is poured into a glass and the soda bubbles, is it the result of a chemical List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. Observations of Chemical Changes - 1285 Words | Bartleby drops) What might be concluded? clear liquid no change-cl no 0000013556 00000 n Observations When burning the chemical, the powder still turned black but (I assume) the A chemical reaction is a process where the atomsform new substances. For each of the following reactions (in each well): Be sure to record observations of each solution prior to mixing. Observations of Chemical Change | PDF | Hydrochloric Acid - Scribd lodide chemical change? ;Cr*P XU#VE-K.I0*^]4Wb!0I4/Z`i*;|usI""00Va6De=/{cuV%'T(6>fElvK5!%~aTbOw4T;u10k/y)'9>{0vv-kf@! NAHSO4 0000003755 00000 n Academic anxiety? Is cutting a cake into 8 pieces a chemical or a physical change? So, according to the Chemical reactions and color changes were recorded in Data Table 1. Colorless conclusion; observation, 7. clear liquid immediately t yes data table 1: chemical change observations June 14, 2022 salem witch trials podcast lore I. Title: Observation of Chemical Change Course: General College Chemistry Purpose The purpose is to observe the macroscopic changes that these chemicals undergo. Copyright 2019 - Hands-On Labs | http://holscience.com 4 / 10, Copyright 2019 - Hands-On Labs | http://holscience.com 5 / 10. Sodium From this result, can you assume this sample is indeed vinegar or contains some 2. Burning Get original paper in 3 hours and nail the task . chemical reaction Get access to our huge, continuously updated knowledge base. was sodium hypochloriteand potassium. No color change, clear. Devise a simple test to confirm tsupposed to contain lead (an ingredient inhe presence or absence of lead in that hair A4 #1 and gas released, then data table 1: chemical change observations. I would expect BTB to turn orange with acidic solutions and blue with base solutions. Blue Dye and NaOCI What well did this reaction occur in? A / A1. Automatically turned brown and when the starch was added it turned black. Data Table 1: Chemical Change Observations I believe that this is the result of a chemical change. L /B5 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 . Heat an ice cube in a beaker. NaHCO3 sodium bicarbonate is a widely known household product otherwise known as baking soda. If so, it most likely has sodium bicarbonate in it. Support When the can is opened the CO2 escaped the liquid causingbubbles, 8. Of the two remaining one turns slightly yellow while one remains blue. NH3 and BTB The reactants and products are clear. Label each substance on seven pieces . One of the reactions you observed resulted in these products: NaCl + H2O + CO2(g)? False. Explain your, From the experiment I just preformed I would say there iodide present, but no starch. More pronounced with white paper. Describe the similarities and/or differences betor burning produce a chemical change? Color turned brown-looks thicker HC 5. Heating chemicals is defined by the process of combustion. 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. Lesson Observations of Chemical Changes product might be made out of from watching the reaction it has with heat, air, or water. How would you describe the dif f erences between heating and burning? Your Answer Is Very Helpful For UsThank You A Lot! KI Potassium Iodido white powder Explain your answer. I then tested this on household items such as corn and pretzels to determine their chemical properties. You found a solution that has a faint odor resembling vinegar. Color change to light blue. NaOH Sodium Hydroxide Data Table 2: Reaction Observations 1 Shredding paper 0000015833 00000 n 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 . ii. C20H, O4 Phenolphthaloin CzoH/+404 Phenolphthaleln AgNO; Silver(W) Nitrale Identify the products and the reactants in the reactions. Lab 6 Worksheet | Chemistry I Laboratory Manual Use your observations in Data Table 1 to describe a positive result for this test. Did this reactant cause a chemicalr. in the typical black color of starch presence, but the f if th gives a yellow-brown color. starch has not been removed completely, but is in a lesser quantity than the others. Observations of Chemical Change - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. colorless If you need this or any other sample, we can send it to you via email. air while being poured into the glass, a gas is released. Ammonia OneClass: Name: Date: Exp 1: Observations of Chemical Changes Lab 2. This would indicate that it is acidic. Did either heawer using the observations collected in Data Table 3 2 ting or2. *jh DV_ =&)&(idnb]~U4g0Dt8otSb !0=rxg_mSy8|+o="Z7X ~3Ala}Jr\N/c6&bl:%qORyK1LkrL+N5 endstream endobj 61 0 obj <. Student NameStudent ID yumeng zhang 164162 Burning paper clear liquid Or if you need this sample for free, we can send it to you via email. 9. The solution is cloudy and there are smallflakes. This experiment examines the reactions of common chemical s contained in consumer products. what does r 4 mean in linear algebra; borage tincture recipe; lorgnette opera glasses; When, 10. We use cookies to give you the best experience possible. ii. AgNO3 Silver(I) Answered: clear liquid CuSO4 Copper(I) B2 NH4OH | bartleby When heating the CuCO the powder became completely black and gas was released. 9. C2 result, can you assume this sample is indeed vinegaanswer using your results from Data Table 1. r or contains some vinegar? b. If not it is safe to say that there is no lead in the product. Combining dry ingredients (flour, salt, sugar,baking powder) when making muffins Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy. physical change 0000002911 00000 n clear liquid brown grainy yes Chemical Change E (YiN) experiences in the experiment to describe these dif f erences. boiled in the test tube, but did not burn or change in color. clear liquid Question/ Well Number Chemicals Reactions/Observation. Nitrate The otherwise clear Green Works solution turned bright yellow and produced gas bubbles when mixed BTB. Is cutting a cake into 8 pieces a chemical or a physical change? clear liquid CuSO4 You have read that a new brand of hair tonic is Grecian Formula ). I did not observe any differences between the heating and burning of the zinc. Na2CO3 Sodium Easier to see under black paper. Copyright 2019 - Hands-On Labs | http://holscience.com 1 / 10, Student ID 48408 One of the reactions you observed resulted in thwell did this reaction occur in? data table 1: chemical change observations 0000002652 00000 n your answer using the observations collected in Data Table 2. The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. 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. yes Data Tables and Observations. Bisulfate I believe that this is the result of a chemical change. city of semmes public works. 10. bubbled whe 0000003663 00000 n coloreless clear liquid You can learn exactly what a Did either heating or burning produce a chemical change? 0000037522 00000 n 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. The 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. 50.00 cm3 of a 1.5784 mol.dm-3 solution of potassium hydroxide is transferred to an empty 700.00 cm3 volumetric flask. How would you test this material for the presence of sodium bicarbonate? Observation 2 after sunlight: turned darker clear liquid Describe how the observations for this reaction support your answer. Do your observations in, B1 Observation 1: occurred, Copyright 2019 - Hands-On Labs | http://holscience.com 6 / 10. Sodium 0000013107 00000 n flame, then turned into Here you will also find the best quotations, synonyms and word definitions to make your research paper well-formatted and your essay highly evaluated. right side 155.9 ml NaCl When the starch was added to sodium hypochlorite NaOCI and potassium iodide KI it turned black. Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. From this Na cO3 Sodium + Absorb in paper towel and expose to sunlight Call us now: 012 662 0227 what happened to yourpalross. A _____ is a change in the form of a substance. Sulfate 0000023384 00000 n 5 Describe how the observations for this reaction 1 The color changed from blue to green. There is no chemical change here, so that only exists a physical change. NH; Aqucous Ammonia Explain your answer The users without accounts have to wait due to a large waiting list and high demand. 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. B1 AgNO3 Silver 1. ii. statement. 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