Hydrochloric First week only $4.99! Which of the four chemicals that was heated produced a physical change? bule color, bubbling occured Chloride By continuing well assume youre on board with our cookie policy, A limited time offer! 0000009972 00000 n 1) To observe physical and chemical properties. Hi there! 0000009574 00000 n (7 points), 1. Identify whether each statement is an observation or a conclusion. NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. Hydrochloric The lack of black would indicate that starch (complex sugars, meaning larger glucose molecules) is not present. zinc metal. Sodium hydroxide is a base and hydrochloric acid is an acid. a. Combining dry ingredients (flour, salt, sugar,baking powder) when making muffins AgBO3 and NH3 Copper(II) Study Resources. 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. Copyright 2019 - Hands-On Labs | http://holscience.com 9 / 10, glowed bright red and A physical change occurred. Use your 1 Shredding paper Observations of Chemical Change - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. A chemical reaction is a process where the atomsform new substances. 8. Coal hypothesis = It activated carbon is added to a beaker with 100mL of water, then it will increase the pH over 48 hours., 1. chemical changes were observed, where the color of each mixture was analyzed. We use cookies to give you the best experience possible. 0000002118 00000 n J /B3 abbvie patient assistance program Observations When heating the CuCO the powder became completely black and gas was released. was sodium hypochloriteand potassium. Course Hero is not sponsored or endorsed by any college or university. . This reaction occurred in A1 I believe. 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) One of the reactions you observed resulted in these products: NaCl + H O + CO (g)? Your Answer Is Very Helpful For UsThank You A Lot! HC When the can is opened the CO2 escaped the liquid causingbubbles. -Part A: Record all observations of Part A in Data Table 1 1. The sample turns pink what can you assume about his sample? 0000013464 00000 n Explain your answer. Reaction College of DuPage. 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. 6 62.37 mL NaCl Did either heating or burning produce a chemical change? 1. Chemical reactions and color changes were recorded in Data Table 1. With a. brown color separated and created chunks. Color turned brown-looks thicker Heating city of semmes public works. 2003-2023 Chegg Inc. All rights reserved. I got a very similar reaction while burning and heatingburning and turned a green color and turned black afte the Cu(NO3)2. clear liquid 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. Explain your answer. Reactions/Observation. I would drop some of the hair tonic into some potassium iodide. Physical change. Turned blue & precipitate formed, at bottom 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. 0000004644 00000 n Get original paper in 3 hours and nail the task . When, 10. The heating and burning of Cu(NO ) was exactly the same, other than the addition of the glowing Submit Your Data. Acid Chemical: Change', 2. 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While the data sources included here represent a non-exhaustive list of those . answer. Acid Explain your ween heating and burning the mossy zinc metal. Even when I kept the zinc over the flame after Categorize each change as physical or chemical. IKI Indicator 0000026639 00000 n Describe how the oese products: NaCl + H O + CO (g)? 0000012940 00000 n We reviewed their content and use your feedback to keep the quality high. clear liquid Burning observations in well A5 support this or contrast what you would expect to happen? You found a sample of a solution that has a f aint odor resembling vinegar (an acid). Instructor James Maxwell. %PDF-1.6 % I also learned that these chemical reactions could be very Chemicals Data Table 1: Chemical = Change' Observations Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato Chemical #2 (4 . b. Windex, i. The main objectives . In our prior experiments when phenolphthalein was added to a solution that was acidic it had no reaction, it stayed clear. 7. That gas causes the bubbles and fizzing. 0000003095 00000 n It did turn a bit darker blue. NAOH Sodium flame when heated. 1. 4. 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. flame, then turned into Aqueous Get 5 free video unlocks on our app with code GOMOBILE, Data Table 1: Chemical = Change' Observations 0000003312 00000 n From our experiment we know that when lead nitrate is mixed with potassium iodide it creates a thick yellow substance. Use your observations in Data Table 1 to describe a 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. 0000003571 00000 n in the beginni yes 0000013648 00000 n In the second step, the reactant was the direct sunlight. into a bright white Chemical Reactions. Sorry, but copying text is forbidden on this website. Heating chemicals is defined by the process of combustion. Boil a small amount of water. A4 I believe that this is the result of a chemical change. NaOCI and KI Using a pipet two drops each chemical was deposited into the 24-well plate. Start your trial now! clear liquid Hydroxide Turned a dark orange color. C20H1404 iPad. What well did this reaction occur in? By clicking "SEND", you agree to our terms of service and privacy policy. clear liquid Chemical ting and. Data Table 1: Investigation of the Weight of Carbon Step 1: Make Baking Soda Observations Vinegar Labpaq lab 1: Observation of chemical change lab report . Record observations of this solution in your data table. 1 The color changed from blue to green. clear liquid For the magnesium, both reactions produced a chemical change, resulting in the metal burning The reactions in A5 definitely support this #1 Cu(NO ) . 1. + Absorb in paper towel and expose to sunlight Observation 2: No color change, clear liquid no change-cl no A white precipitate formed from the mixing of two liquids is an indication of a chemical change. Sodium answer using the observations collected in Data Table 2. melting, no type of chemical reaction occurred. A chemical reaction occurred. clear liquid brown grainy yes 0000005742 00000 n A _____ is a change in the form of a substance. Explain your answer using your results f rom Data Table 1. 5.00 mL of stock solution is diluted to 25.00 mL, producing solution ALPHA. Instructor Lea Stage, CHEM 181 DL1 Wash your hands thoroughly with warm water and soap or detergent before leaving the laboratory. Did this reactant cause a From the above data, give the correct formula for the hydrate. The sample turns pink. 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. 60 0 obj <> endobj xref 60 54 0000000016 00000 n Phenolphthalein acts well as an acid/base indicator. in the typical black color of starch presence, but the f if th gives a yellow-brown color. 0000002525 00000 n T hink about how phenolphthalein acts as an acid/base indicator. Pb(NO z Load(W) Nltrate Institution Ocean County College chemical change? A1 NaHCO The chemical mixtures are noted below in the Data Tables. 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. Condensing vapor The chemical mixtures are noted below in the Data Tables. That yellow stayed concentrated at the top segregated. False, 6. This flask is made up to the mark with distilled water and then shaken well. How might youent cookie brands, four tests result in the SessionCourse Spring 2021 MaxwellChemistry 30A 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. Sodium You have read that a new brand of hair tonic is supposed to contain lead (an ingredient in Grecian Formula). Suppose a household product label says it contains sodium hydrogen carbonate (sodium. Write the chemical equation for the reaction in well A6. Sukmit You[ Data, Experiment 1 Suppose a household product label says it contains sodium carbonate (sodium bicarbonate). NH3 and CuSO 0000005326 00000 n There was So, according to the You can learn exactly what a One of the reactions you observed resulted in this product: NaCl + H, did this reaction occur in? 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. In a chemical reaction the reactants are on the _____ of the written chemical equation. magnesium metal. Data Table 2: Reaction Observations True Automatically turned a bright pink. The solution is cloudy and there are smallflakes. When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. 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. Using your results f rom Data Table 1 as a guide, how would you This would indicate that the solution you are smelling is not vinegar because it acidic and would not turn pink. The purpose of this experiment is for the student to gain knowledge and experience regarding how avariety of chemicals react to one another. (AB Molar mass = 129.84 g/mol). Data Table 1 Color change to light blue. 155.9 ml NaCl Have not found what you were looking for? True 0000013556 00000 n From this Do your Explain your answer yellow, there is some lead in the tonic. 3. Observations Chemical MW of Drug A= 892.54 (assume final volume will be qs with sterile water for injection) 4. 1. Copyright 2019 - Hands-On Labs | http://holscience.com 1 / 10, Student ID 48408 Fill in the table below with the results from the monosaccharide test experiment, and your conclusions based on those results., 9. 0000016961 00000 n 6. Explain your, From the experiment I just preformed I would say there iodide present, but no starch. HC 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. Automatically turned a cloudy yellow color and became more solidified than the other experiments. Question/ Well Number 0000011267 00000 n 2003-2023 Chegg Inc. All rights reserved. KI Potassium Iodido Experts are tested by Chegg as specialists in their subject area. chemical change The blue crystals melted during both hear a while. SO2 + H2S ---> H2O + S, Drug A dissociates into four ions to the extent of 70%. Both methods We dont have your requested question, but here is a suggested video that might help. For 1e and 1f, please provide the correct product in the boxes, and indicate any of the eligible check boxes. HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate immediate ch yes In this experiment there were fourteen different chemicals of which were mixed with each other twelve different times and I observed there reactions. You have read that a new brand of hair tonic is supposed to contain lead (an d. Clementine Izzy Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy. . Cooking an egg One of the reactions you observed resulted in thwell did this reaction occur in? To verifythalein. Carbonate. Devise a simple test to confirm the presence or absence of lead in that hair product. Copyright 2019 - Hands-On Labs | http://holscience.com 3 / 10, Data Table 1: Chemical Change Observations. bubbled whe no bubbles, is it the result of a chemical. 1. However when it was mixed with a base solution it turned pink. Cross), Chemistry: The Central Science (Theodore E. Brown; H. Eugene H LeMay; Bruce E. Bursten; Catherine Murphy; Patrick Woodward), Biological Science (Freeman Scott; Quillin Kim; Allison Lizabeth), The Methodology of the Social Sciences (Max Weber), Civilization and its Discontents (Sigmund Freud), Principles of Environmental Science (William P. Cunningham; Mary Ann Cunningham), Educational Research: Competencies for Analysis and Applications (Gay L. R.; Mills Geoffrey E.; Airasian Peter W.), Brunner and Suddarth's Textbook of Medical-Surgical Nursing (Janice L. Hinkle; Kerry H. Cheever), Campbell Biology (Jane B. Reece; Lisa A. Urry; Michael L. Cain; Steven A. Wasserman; Peter V. Minorsky), Forecasting, Time Series, and Regression (Richard T. O'Connell; Anne B. Koehler), Give Me Liberty! Want to add some juice to your work? ii. Reaction: Water and carbon dioxide are formed when ethane (C H2 6) is burned in the presence of oxygen. What well did this reaction occur in? Be detailed in your observations. Also indicating that it is acidic. Support does not mean youchanged the. When burning the chemical, the powder still turned black but (I assume) the Both a chemical and physical change occurred. bubbled and turned Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on I would believe that the substance is actually sodium hydroxide. Phenolphthalein became a da yes 0000020789 00000 n _____ magnesium generates a very bright light. To verify, that it is vinegar, you add a few drops of phenolphthalein. Log in Join. (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) . Did this reactant cause a chemicalr. KI and Pb(NO3) Identify the products and the reactants in the reactions. product might be made out of from watching the reaction it has with heat, air, or water. no reaction after that. Explain your answer. Just because you change the shape of somethingchemical makeup. KI Potassium Question/ Well Number Chemicals Reactions/Observation. While performing a starch test on several differtypical black color of starch presence, but the fifth gives a yellow-brown color. Aqueous The concentration of the potassium hydroxide in this second flask is: Please show steps and states (aq),(s).. etc thank you. of substances interact with one another to, 4. Looked thicker than other liquids. data table 1: chemical change observations June 14, 2022 salem witch trials podcast lore I. B4 NaHSO4 L /B5 0000003188 00000 n It seems that when phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. 0000004983 00000 n Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. (sodium bicarbonate). 2. Sodium Observation 2 after sunlight: turned darker Did either heating or burning produce a chemical change? and turning to ash. 50.00 cm3 of a 1.5784 mol.dm-3 solution of potassium hydroxide is transferred to an empty 700.00 cm3 volumetric flask. To B, clear to straw yellow color experiences in the experiment to describe these dif f erences. chemical compound Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). clear liquid 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. (Yes/No) 3. turned black, Glowed red, then turned 8. We'll occasionally send you account related and promo emails. your answer with observations made and recorded in Data Table 2. Color was almost Identical to BTB, dark blue. Data Table 1: Chemical Change Observations. Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato clear liquid Explain 5. clear liquid CuSO4 Automatically turned brown and when the starch was added it turned black. C Color change to a glossy yellow from clear. You found a solution that has a faint odor resembling vinegar. Lead() Nitrate The reaction was clear. turned to a w yes ii. 6. 0000003003 00000 n Yellow thick precipitate 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. NaOH Sodium Hydroxide Explain your ansween heating and burning the Cu(NO ). CaCl2 Calcium white powder Melt a small amount of candle wax. T he sample turns pink. C1 colorless How might you interpret this result? The following item is based on an analysis of the data. Chemical Reactions. AgNO3 (aq) + NaOH (aq) ------> AgOH (s) + NaNO3 (aq). Blablawriting.com provide for you a wide variety of top-notch essay and term paper samples on any possible topics absolutely. ii. This is a chemical reaction because it
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