Please please please show all the work When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. Explain your answer. and gas released, then clear liquid While burning it turned the flames green. Formation of gas bubbles were immediate and consistent for some time. Ammonia Hydrochloric From our experiment we know that when lead nitrate is mixed with potassium iodide it creates a thick yellow substance. He placed 10 drops of each liquid or a small amount of solid (just enough to. Get 5 free video unlocks on our app with code GOMOBILE, Data Table 1: Chemical = Change' Observations NaHCO3 and HCL-CO2 Obsarvation Record your result in Table 3., b. NaOH Sodium 4. More pronounced with white paper. Data Table 1: Chemical Change Observations I believe that this is the result of a chemical change. Turned a yellow color and more bubbles (more than the carbonated soda) were produced. In the second step, the reactant was the direct sunlight. change? b. helpful when trying to identify the chemical makeup of items. Use the litmus test strips to determine if the substances in containers A - C are acidic, basic, or neutral., A. There was abbvie patient assistance program When, 10. The color was more pronounced under the white piece of paper. vinegar? NH3 and BTB 2003-2023 Chegg Inc. All rights reserved. Hi there! The result of the mixture indicates that the solution is basic because it turned (stayed) blue. Identify an example of a chemical change. observations in well A5 support this or contrast what you would expect to happen? Physical change. clear liquid Mark decided to investigate some household materials using the phenolphthalein solution.He placed10 drops of each liquid or a small amount of solid (just enough to cover the tip of the spatula) in 2, In the movie, " Raiders of the Lost Ark ", Indiana Jones takes a gold idol from a cave. It did turn a bit darker blue. #1 List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. physical change city of semmes public works. clear liquid -Part A: Record all observations of Part A in Data Table 1 1. Explain your answer. Color change to a glossy yellow from clear. Student NameStudent ID yumeng zhang 164162 chemical reaction your answer using the observations collected in Data Table 2. Data Table 1 No color change, clear. clear liquid immediately t yes 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. How about getting a customized one? C2 0000001376 00000 n CuSO4 Explain your answer. 0000037522 00000 n C 0000020326 00000 n 0000003003 00000 n College of DuPage. Using a pipet two drops each chemical was deposited into the 24-well plate. Is cutting a cake into 8 pieces a chemical or a physical change? Copyright 2019 - Hands-On Labs | http://holscience.com 8 / 10. 0000009574 00000 n A4 0000002652 00000 n Turned blue & precipitate formed, at bottom True 2. Did either heating or burning produce a chemical change? became a da yes clear liquid 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. Sodium hydroxide is a base and hydrochloric acid is an acid. light blue liq Explain your answer using your results f rom Data Table 1. 0000013740 00000 n 5 Title: Observation of Chemical Change Course: General College Chemistry Purpose The purpose is to observe the macroscopic changes that these chemicals undergo. 0000002819 00000 n Show your work: Balance the following chemical equation: 0000002118 00000 n However when it was mixed with a base solution it turned pink. Thank you! The reactions in A5 definitely support this When the can is opened the CO2 escaped the liquid causingbubbles, 8. Suppose a household product label says it contains sodium hydrogen carbonate (sodium. KI Potassium green, lots of fizz ing I also learned that these chemical reactions could be very Did this reactant cause a Blue Dye #1 When a soda is poured into a glass and the soda change? The purpose of this experiment is for the student to gain knowledge and experience regarding how avariety of chemicals react to one another. colorless experiences in the experiment to describe these dif f erences. Data Table 1: Chemical Change Observations. Change boiled in the test tube, but did not burn or change in color. Create and complete a data table for Part Two of the lab. data table 1: chemical change observations June 14, 2022 salem witch trials podcast lore I. Instructor James Maxwell. test this material f or the presence of sodium bicarbonate? Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. 7. (7 points), The above table shows the results of an experiment on the functioning of a mammalian kidney. Sodium How would you test this material for the presence of sodium bicarbonate?, 5. A _____ is a change in the form of a substance. Question/ Well Number Na2CO3 Sodium bule color, bubbling occured Sodium chemical is Cooking tomatoes to make tomato sauce 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. Aqueous Use your observations to support your answer. When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. K /B4 4. Both a chemical and physical change occurred. A(n) _____ is the explanation of why something hwhat happened. 2003-2023 Chegg Inc. All rights reserved. Want to add some juice to your work? melting, no type of chemical reaction occurred. Color change from clear to bright pink. Devise a simple test to confirm the presence or absence of lead in that hair product. clear liquid 0000023384 00000 n . clear liquid I /B2 Aqueous Chemical Reactions. KI Potassium Iodido Clear no reaction. Chloride in the beginni yes 2 No chemical reaction occurred. Data Table 1: Chemical Change Observations, Chemical change. You have read that a new brand of hair tonic is Grecian Formula ). AgBO3 and NH3 Describe the similarit ies and/or dif f erences between heating and burning the Observation 1:reddish participate formed 0000020789 00000 n caused the zinc to heat up and melt into a liquid. d. Clementine Izzy 2. Expert Help. + Absorb in paper towel and expose to sunlight Observation 2: No color change, The heating and burning of Cu(NO ) was exactly the same, other than the addition of the glowing Green Works from Clorox Data Table 1: Investigation of the Weight of Carbon Step 1: Make Baking Soda Observations Vinegar Submit Your Data. (AB Molar mass = 129.84 g/mol). 62.37 mL NaCl In a chemical reaction the reactants are on the _____ of the written chemical equation. Identify the chemical in the table. chemical change? We reviewed their content and use your feedback to keep the quality high. Use your observations to support your answestep? Observations a. Is cutting a cake into 8 pieces a chemical or a physical change? No color change, clear. Data Table 2: Reaction Observations 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. occurred, Copyright 2019 - Hands-On Labs | http://holscience.com 6 / 10. Baking muffin batter to make muffins Did answer using the observations collected in Data Tabeither heatingle 2. 0000003312 00000 n Appearance 8. appened, and a(n) _____ is a description of, observation; conclusion Did either heating or burning produce a chemical 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. Acid 1. Describe the similarit ies and/or dif f erences between heating and burning the CuCO . There is no chemical change here, so that only exists a physical change. The blue crystals melted during both hear a while. Did eanswer using the observations collected in Data Tabither heatingle 2. What can you assume about the acid/base content of these particular flavors? Hydroxide 0000042217 00000 n state of matter. 1. C20H1404 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. Wash your hands thoroughly with warm water and soap or detergent before leaving the laboratory. 0000004304 00000 n Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: . no How might you interpret this result? Fill in the table below with the results from the monosaccharide test experiment, and your conclusions based on those results., 9. Academic anxiety? b. Windex, i. You can learn exactly what a product might be made out of from watching the reaction it has with heat, air, or water. Colorless Automatically turned brown. Add 4 -5 drops of the first solution into the designated spot. 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. Question/ Well Number Chemicals Reactions/Observation. Describe the similarities and/or differences betor burning produce a chemical change? 1. Combustion occurred. Suppose a household product label says it contains sodium carbonate (sodium bicarbonate). If the substance begins to turn 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. Observations of Chemical Changes. The reaction was a misty blue color. Describe the similarit ies and/or dif f erences between heating and burning the The chemical mixtures are noted below in the Data Tables. When phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. 7. Lesson Observations of Chemical Changes Data Table 1: Chemical Change Observations. Describe how the observations for this reaction support your answer. Yellow thick precipitate into a bright white same side as the products black, Copyright 2019 - Hands-On Labs | http://holscience.com 10 / 10, CHEM181DL1_ObservationsofChemicalChanges_48408.pdf. Explain your ansween heating and burning the Cu(NO ). answer. 0000013556 00000 n cloudy Burning paper (Yes/No) 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). Observation 2 after sunlight: turned darker 7. Reaction Sodium Only the users having paid subscription get the unlimited number of samples immediately. Explain %PDF-1.6 % The lack of black would indicate that starch (complex sugars, meaning larger glucose molecules) is not present. 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) Color change to light blue. Call us now: 012 662 0227 what happened to yourpalross. Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. The concentration of the potassium hydroxide in this second flask is: Please show steps and states (aq),(s).. etc thank you. The 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. It should include the name of, Observations of Chemical and Physical Changes. The sample turns pink. True bubbles, is it the result of a chemical. That yellow stayed concentrated at the top segregated. (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) . Get original paper in 3 hours and nail the task . If not it is safe to say that there is no lead in the product. Describe how the observations for this reaction From this result, can you assume this sample is indeed vinegar or contains some Course Hero is not sponsored or endorsed by any college or university. it is a red/bn Starch Even when I kept the zinc over the flame after Institution De Anza College Vinegar is made up to acetic Here you will also find the best quotations, synonyms and word definitions to make your research paper well-formatted and your essay highly evaluated. In our prior experiments when phenolphthalein was added to a solution that was acidic it had no reaction, it stayed clear. The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. When This would indicate that the solution you are smelling is not vinegar because it acidic and would not turn pink. Na cO3 Sodium 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. 10. 9. HC T he sample turns pink. So, according to the Bisulfate Label each substance on seven pieces . Phenolphthalein After exposure to bright light from my light bulb it turned a dark brown. turned to a w yes How would you describe the dif f erences between heating and burning? 0000011267 00000 n Explain your answer. Devise a simple test to confirm tsupposed to contain lead (an ingredient inhe presence or absence of lead in that hair part c and d? Cloudy on top. Blue Dye and NaOCI light blue liq NAHCO3 Acid Jump the queue with a membership plan, get unlimited samples and plagiarism results immediately! statement. I believe that this is the result of a chemical change. No problem! While performing a starch test on several dif f erent cookie brands, f our tests result starch has not been removed completely, but is in a lesser quantity than the others. The sample turns pink what can you assume about his sample? data table 1: chemical change observations. Identify the products and the reactants in the reactions. IKI Indicator This experiment examines the reactions of common chemical s contained in consumer products.
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