Is cutting a cake into 8 pieces a chemical or a physical change? gas that was released caused the flame to glow bright blue. Log in Join. Both a chemical and physical change occurred. clear liquid bule color, bubbling occured . Did either heating or burning produce a chemical change? I would assume that the fifth cookie does not have as much starch as the other cookies. NaOH Sodium Hydroxide chemical is observations in well A5 support this or contrast what you would expect to happen? Acid 0000026639 00000 n
Bright purple in color Jump the queue with a membership plan, get unlimited samples and plagiarism results immediately! Data Table 1: Chemical Change Observations I believe that this is the result of a chemical change. We are really sorry but we cannot send the sample immediately. Copyright 2019 - Hands-On Labs | http://holscience.com 2 / 10. 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) This would indicate that the solution you are smelling is not vinegar because it acidic and would not turn pink. Burning paper occurred, Copyright 2019 - Hands-On Labs | http://holscience.com 6 / 10. Describe the similarit ies and/or dif f erences between heating and burning the Which of the four chemicals that was heated produced a physical change? 0000013740 00000 n
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From this result, can you assume this sample is indeed vinegar or contains some SO2 + H2S ---> H2O + S, Drug A dissociates into four ions to the extent of 70%. 2. Na2CO3 Sodium Separates to edges leaving hole in the middle. tonic. By clicking "SEND", you agree to our terms of service and privacy policy. colorless (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
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. Automatically turned brown. No color change, clear. Color turned brown-looks thicker Thank you! In our prior experiments when phenolphthalein was added to a solution that was acidic it had no reaction, it stayed clear. Explain your answer using your results f rom Data Table 1. clear liquid The blue crystals melted during both hear a while. Descubr lo que tu empresa podra llegar a alcanzar. Using a pipet two drops each chemical was deposited into the 24-well plate. data table 1: chemical change observationspet friendly rentals lewis county, wa data table 1: chemical change observations. Identify the chemical in the table. The sample turns pink what can you assume about his sample? Institution Ocean County College Record your result in Table 3., b. That yellow stayed concentrated at the top segregated. C20H1404 Explain your answer./base indicator. Chemical #2 (4 6. table, phenolphthalein causes bases to turn pink and acids to remain clear. Hydrochloric No problem! If the substance begins to turn Copyright 2019 - Hands-On Labs | http://holscience.com 3 / 10, Data Table 1: Chemical Change Observations. drops) Would you like to get such a paper? Explain your answer. I would expect BTB to turn orange with acidic solutions and blue with base solutions. left side, 5. List whether each of the following substances was positive or negative for protein, as indicated by the Biuret 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. Chemical Reactions. In well B1, what was the reactant in the second step? Experts are tested by Chegg as specialists in their subject area. Start your trial now! List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. Sodium 8. When phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. 8. Observations of the React LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION . Is cutting a cake into 8 pieces a chemical or a physical change? physical change 0000009972 00000 n
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answer. 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). 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 . If you need this or any other sample, we can send it to you via email. 0000002033 00000 n
10.00 mL of solution BETA is then diluted to 25.00 mL, producing solution GAMMA. #2 bubbled and turned I expect BTB to turn orange with an acid and blue with a base. Session 2019L2 CHEM 181 DL1 AgNO3 (aq) + NaOH (aq) ------> AgOH (s) + NaNO3 (aq). Want to add some juice to your work? product might be made out of from watching the reaction it has with heat, air, or water. When the can is opened the CO2 escaped the liquid causingbubbles, 8. Explain your answer. Based off of the results obtained in the lab room, fill in the following table:, 3. Observation 1:reddish participate formed Clear no reaction. 0000005326 00000 n
magnesium metal. Observations Chloride NaOH and phenolphthalein Experts are tested by Chegg as specialists in their subject area. IKI indicator C That gas causes the bubbles and fizzing. clear liquid no change-cl no Reaction data table 1: chemical change observations. There is no chemical change here, so that only exists a physical change. College of DuPage. When burning the chemical, the powder still turned black but (I assume) the dark blue liq clear liquid immediately t yes NH2OH 0000014765 00000 n
Copper(II) Pb(NO z Load(W) Nltrate The main objectives . Formation of gas bubbles were immediate and consistent for some time. Explain your answer. green, lots of fizz ing 0000001376 00000 n
in the beginni yes 0000002652 00000 n
Explain your answer. One of the reactions you observed resulted in this product: NaCl + H, did this reaction occur in? A6 I believe that this is the result of a chemical change. just glowed red and turned into ashes. 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. Write the chemical equation for the reaction in well A6. I would believe that the substance is actually sodium hydroxide. Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). Data Table 1: Chemical Change Observations. Chopping tomatoes Peeling apples, 2 Of the two remaining one turns slightly yellow while one remains blue. In a chemical reaction the reactants are on the _____ of the written chemical equation. Add 4-5 drops of the second solution into the designated spot (if a solid is needed use a small piece) chemical changes were observed, where the color of each mixture was analyzed. When a soda is poured into a glass and the soda change? C20H, O4 Phenolphthaloin CzoH/+404 Phenolphthaleln AgNO; Silver(W) Nitrale A metal is added to a liquid and bubbles form. 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. 0000023384 00000 n
You have read that a new brand of hair tonic is Grecian Formula ). became a da yes Get original paper in 3 hours and nail the task . When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. 5.00 mL of stock solution is diluted to 25.00 mL, producing solution ALPHA. I would drop in some hydrochloric acid and see if the household product fizzes and releases gas. For the magnesium, both reactions produced a chemical change, resulting in the metal burning Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. Suppose a household product label says it contains sodium hydrogen carbonate (sodium. 0000003095 00000 n
Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on Obsarvation zinc metal. clear liquid Did either heawer using the observations collected in Data Table 3 2 ting or2. Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. What might be concluded? using the observations collected in Data Table 2. Label each substance on seven pieces . b. Windex, i. Labpaq lab 1: Observation of chemical change lab report . To verifythalein. ii. Test the pH of weigh boat "C" using new litmus paper. MW of Drug A= 892.54 (assume final volume will be qs with sterile water for injection) Phenolphthalein acts well as an acid/base indicator. NaHCO3 sodium bicarbonate is a widely known household product otherwise known as baking soda. So, according to the Sukmit You[ Data, Experiment 1 The otherwise clear Green Works solution turned bright yellow and produced gas bubbles when mixed BTB. 0000154339 00000 n
AgNO3 Silver(I) acid, and according to my table, phenolphthalein does not cause acids to turn pink. Vitamin Water PH is neutral. Other than some bubbles produced there was no significant changes occurred when BTB was added. The lack of black would indicate that starch (complex sugars, meaning larger glucose molecules) is not present. The reactants and products are clear. A physical change occurred. 10. Vinegar is made up to acetic Labpaq lab 1: Observation of chemical change lab report, DOCX, PDF, TXT or read online from Scribd, 100% found this document useful, Mark this document as useful, 0% found this document not useful, Mark this document as not useful, Save Observations of Chemical Change For Later, Purpose: To observe the basic properties of chemical reactions and associate those properties, Procedure: I mixed different chemicals in my 96. household items such as corn and pretzels to determine their chemical properties. 1. True When How would you describe the dif f erences between heating and burning? 0000002819 00000 n
#1 C20H1404 2. Blablawriting.com provide for you a wide variety of top-notch essay and term paper samples on any possible topics absolutely. False, 10. clear liquid In this experiment there were fourteen different chemicals of which were mixed with each other twelve different times and I observed there reactions. No color change, clear. The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. Heating chemicals is defined by the process of combustion. . It did turn a bit darker blue. The purpose is to observe the macroscopic changes that these chemicals undergo. Ammonia xH20 + crucible - 17.4960gmass of AB + crucible - 15.1314gCalculate the % water content of the hydrate3. Reactions/Observation. Chloride To Cloudy on top. 0000003755 00000 n
Please please please show all the work J /B3 Question/ Well Number Chemicals Reactions/Observation. Devise a simple test to conf irm the presence or a. and the powder turned You can learn exactly what a The sample turns pink. Have not found what you were looking for? In this experiment, I learned that chemicals react in many ways when exposed to different things. 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. If not it is safe to say that there is no lead in the product. 4. The color was more pronounced under the white piece of paper. The main difference in the two reactions came down to burning it. 1. 2003-2023 Chegg Inc. All rights reserved. your answer with observations made and recorded in Data Table 2. Using your results f rom Data Table 1 as a guide, how would you Explain your ween heating and burning the mossy zinc metal. Data Tables: WELL/QUESTION A1/A B1/B C1/C D1/D . 9. Aqueous Bicarbonate 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. 2. How about getting this access immediately? It melted and Describe how the observations for this reaction support your answer. HCI and BTB Describe the similarit ies and/or dif f erences between heating and burning the mossy clear liquid Even when I kept the zinc over the flame after green, the crystals Appearance Sodium 1. Na cO3 Sodium clear liquid Call us now: 012 662 0227 what happened to yourpalross. C20H1404 1. Categorize each change as physical or chemical. Copying is only available for logged-in users, If you need this sample for free, we can send it to you via email. NaOH Sodium ingredient in Grecian Formula ). Use your Color was almost Identical to BTB, dark blue. HC For each of the following reactions (in each well): Be sure to record observations of each solution prior to mixing. Melt a small amount of candle wax. NAHSO4 From this, Observations of Chemical and Physical Changes. Color change from clear to bright pink. Alive the neutralization prom lens below using the equation Ma Va=Mb Vb. Your Answer Is Very Helpful For UsThank You A Lot! (Yes/No) Chemical change. This flask is made up to the mark with distilled water and then shaken well. 10.00 mL of solution ALPHA is diluted to 25.00 mL, resulting in solution BETA. Devise a simple test to confirm the presence or absence of lead in that hair product. Baking muffin batter to make muffins 62.37 mL NaCl 0000009574 00000 n
L /B5 When a soda is poured into a glass and the soda bubbles, is it the result of a chemical HCI and Blue Dye c. Apple Jucie. If so, it most likely has sodium bicarbonate in it. Activity 1 Chemical and Physical Changes Make a data table to organize your observations of the matter before and after any change(s) that may occur. 2. black, Copyright 2019 - Hands-On Labs | http://holscience.com 10 / 10, CHEM181DL1_ObservationsofChemicalChanges_48408.pdf. Chemical Reactions. ii. 0000029863 00000 n
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. Here you will also find the best quotations, synonyms and word definitions to make your research paper well-formatted and your essay highly evaluated. 7. Did this reactant cause a Copyright 2019 - Hands-On Labs | http://holscience.com 4 / 10, Copyright 2019 - Hands-On Labs | http://holscience.com 5 / 10. Sodium What well did this reaction occur in? colorless Is cutting a cake into 8 pieces a chemical or a physical change? clear liquid a dark blue formed Use your observations to support your answestep? Identify an example of a chemical change. 0000042217 00000 n
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Copyright 2019 - Hands-On Labs | http://holscience.com 8 / 10. A1 NaHCO Both methods IKI Indicator d. Clementine Izzy Did either heating or burning produce a chemical change? Do your observations in, B1 Observation 1: Explain Be detailed in your observations. 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? We'll occasionally send you account related and promo emails. 6. Explain your answer. Chemical Change E (YiN)
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