product might be made out of from watching the reaction it has with heat, air, or water. 0000014765 00000 n
immediate ch yes Academic anxiety? Do your observations in, B1 Observation 1: The following item is based on an analysis of the data. 1) To observe physical and chemical properties. colorless 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) Nitrate 44 C20H1404 Phenolphthalein NaOH Sodium Hydroxide HCI Hydrochloric Acid A5 C20H1404 Phenolphthalein. Support 0000003479 00000 n
We'll occasionally send you account related and promo emails. bubbled and turned Course CHEM 181 DL1 False, 10. The solution is cloudy and there are smallflakes. Explain your answer. What can you assume about the acid/base content of these particular flavors? Observation 2 after sunlight: turned darker Turned blue & precipitate formed, at bottom c. 146.6 mL NaCl 0000010561 00000 n
colorless ii. Colorless tonic. 2. How would you test this material for the presence of sodium bicarbonate?, 5. 3. C20H1404 From this, Observations of Chemical and Physical Changes. answer using the observations collected in Data Table 2. 0000002652 00000 n
1 Shredding paper 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. iPad. 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. Get a custom sample essay written according to your requirements urgent 3h delivery guaranteed. clear liquid CuSO4 NaOH: NaOH, Educator app for Instructor Lea Stage, CHEM 181 DL1 or gas, which would be the CO . 10. 0000026639 00000 n
How might you interpret this result? Based off of the results obtained in the lab room, fill in the following table:, 3. Identify whether each statement is an observation or a conclusion. appened, and a(n) _____ is a description of, observation; conclusion The Lesson Observations of Chemical Changes physical change, 2. Describe how the observations for this reaction NaHCO3 and HCL-CO2 I then tested this on household items such as corn and pretzels to determine their chemical properties. AgNO3 (aq) + NaOH (aq) ------> AgOH (s) + NaNO3 (aq). The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. 9. no reaction after that. Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on 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 1. 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! I also learned that these chemical reactions could be very Would you like to get such a paper? NH; Aqucous Ammonia trailer
<<1F743DE7EAF4484B866163DC32EB514E>]>>
startxref
0
%%EOF
113 0 obj
<>stream
That yellow stayed concentrated at the top segregated. Wash your hands thoroughly with warm water and soap or detergent before leaving the laboratory. 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. False. HC 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. absence of lead in that hair tonic. NAHSO4 Sodium hydroxide is a base and hydrochloric acid is an acid. This flask is made up to the mark with distilled water and then shaken well. 2. bubbling and fizz ing 4. 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) T he sample turns pink. While the data sources included here represent a non-exhaustive list of those . Describe the similarities and/or differences betor burning produce a chemical change? Color change to light blue. Easier to see under black paper. just glowed red and turned into ashes. magnesium metal. Chemical Change E (YiN) The purpose of this experiment is for the student to gain knowledge and experience regarding how avariety of chemicals react to one another. HCI and Blue Dye So next we can look at salt and water that undergoes evaporation to this form salt in the solid state, which is a physical process. Starch Sodium test this material f or the presence of sodium bicarbonate? (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) . (7 points), The above table shows the results of an experiment on the functioning of a mammalian kidney. Want to add some juice to your work? Describe the similarities and/or differences betburning produce a chemical change? 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. Did either heating or burning produce a chemical change? A chemical change may also be referred to as a _____. 0000003848 00000 n
Yellow thick precipitate material for the presence of sodium bicarbonate? Even when I kept the zinc over the flame after Did either heawer using the observations collected in Data Table 3 2 ting or2. Blue Dye #1 Turned a dark orange color. Is cutting a cake into 8 pieces a chemical or a physical change? Chemical Reactions. Explain your answer. 0000016961 00000 n
The sample turns pink what can you assume about his sample? yes KI Potassium Baking muffin batter to make muffins Other than some bubbles produced there was no significant changes occurred when BTB was added. Observation 1:reddish participate formed Reaction: Water and carbon dioxide are formed when ethane (C H2 6) is burned in the presence of oxygen. 0000020326 00000 n
Suppose a household product label says it contains sodium carbonate (sodium bicarbonate). Use your Just because you change the shape of somethingchemical makeup. turned to a w yes When When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. Sodium Na cO3 Sodium observations collected in Data Table 2. Observations 0000045990 00000 n
bule color, bubbling occured bubbled whe 3. Did this reactant cause a chemicalr. 155.9 ml NaCl 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. 0000003571 00000 n
How about getting a customized one? Phenolphthalein 5. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. 2. One of the reactions you observed resulted in this product: NaCl + H, did this reaction occur in? Three household products mixed with bromothymol blue (BTB): a. 0000005742 00000 n
It should include the name of, Observations of Chemical and Physical Changes. Use your observations in Data Table 1 to describe a I expect BTB to turn orange with an acid and blue with a base. NAOH Sodium 0000004304 00000 n
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. Log in Join. NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. Clear no reaction. Physical change. Describe how the oese products: NaCl + H O + CO (g)? became a white ash, 3 2 Melted and turned Hydroxide Sodium (AB Molar mass = 129.84 g/mol). If the substance begins to turn Phenolphthalein Chloride Devise a simple test to conf irm the presence or 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. 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. Cooking an egg 0000020789 00000 n
looks the san yes Sodium What does this indicate about a buffers ability to maintain pH when an acid or a base is added?, 1. Heat an ice cube in a beaker. Expert Help. 0000023384 00000 n
The reaction was clear. The reaction was a misty blue color. Chemical 0000001895 00000 n
What well did this reaction occur in? 10.00 mL of solution ALPHA is diluted to 25.00 mL, resulting in solution BETA. This reaction occurred in A1 I believe. A _____ is a change in the form of a substance. dilution factor for BETA from ALPHA solution = 0.0476 Observation 2: The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. Explain your answer. Did either heating or burning produce a chemical change? data table 1: chemical change observationspet friendly rentals lewis county, wa data table 1: chemical change observations. flame, then turned into We use cookies to give you the best experience possible. I believe that this is the result of a chemical change. Melt a small amount of candle wax. That was the only reaction that caused any type of fizzing The color was more pronounced under the white piece of paper. clear liquid no change-cl no It seems that when phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. Data Table 2: Reaction Observations Did either heating or burning produce a chemical change? Carbonate Explain your answer using the Test the pH of weigh boat "C" using new litmus paper. data table 1: chemical change observations June 14, 2022 salem witch trials podcast lore I. IKI Indicator Record your result in Table 3., b. flame when heated. clear liquid i. Session 2019L2 CHEM 181 DL1 5 To When a soda is poured into a glass and the soda change? statement. Explain your answer. it is a red/bn Starch Describe the similarit ies and/or dif f erences between heating and burning the mossy Create and complete a data table for Part Two of the lab. Well Chemical #1 (4 Chemical Sulfate To verify, that it is vinegar, you add a few drops of phenolphthalein. 0000015516 00000 n
6 Change Sukmit You[ Data, Experiment 1 There was Automatically turned a dark green. Phenolphthalein acts well as an acid/base indicator. Bicarbonate Devise a simple test to confirm tsupposed to contain lead (an ingredient inhe presence or absence of lead in that hair The reaction turning yellow would be indicative of an acidic solution when mixed with BTB. clear liquid 0000005326 00000 n
In a chemical reaction the reactants are on the _____ of the written chemical equation. C was sodium hypochloriteand potassium. 0000013464 00000 n
0000003755 00000 n
SessionCourse Spring 2021 MaxwellChemistry 30A . Data Table 1: Chemical Change Observations. 0000013740 00000 n
You have read that a new brand of hair tonic is Grecian Formula ). 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) Nitrate 44 C20H1404. your answer with observations made and recorded in Data Table 2. Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. Explain your answer. CaCl2 Calcium Describe the similarit ies and/or dif f erences between heating and burning the CuCO . into a bright white right side Also indicating that it is acidic. 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. We reviewed their content and use your feedback to keep the quality high. With a. brown color separated and created chunks. 10.00 mL of solution BETA is then diluted to 25.00 mL, producing solution GAMMA. When the can is opened the CO2 escaped the liquid causingbubbles, 8. 1. 0000011267 00000 n
In this experiment, I learned that chemicals react in many ways when exposed to different things. 0000015833 00000 n
Sulfate Coal hypothesis = It activated carbon is added to a beaker with 100mL of water, then it will increase the pH over 48 hours., 1. Instructor James Maxwell. How would you test this material for the presence of sodium bicarbonate? 1. A white precipitate formed from the mixing of two liquids is an indication of a chemical change. Use your observations to support your answer. I would drop in some hydrochloric acid and see if the household product fizzes and releases gas. clear liquid brown grainy yes Copyright 2019 - Hands-On Labs | http://holscience.com 1 / 10, Student ID 48408 Get original paper in 3 hours and nail the task . 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) chemical is bubbled and yes From our experiment we know that when lead nitrate is mixed with potassium iodide it creates a thick yellow substance. Blue Dye and NaOCI Experts are tested by Chegg as specialists in their subject area. Student NameStudent ID yumeng zhang 164162 Call us now: 012 662 0227 what happened to yourpalross. Use your observations to support your answestep? In the second step, the reactant was the direct sunlight. Here you will also find the best quotations, synonyms and word definitions to make your research paper well-formatted and your essay highly evaluated. Explain your answer./base indicator. Describe the similarit ies and/or dif f erences between heating and burning the light blue liq NAHCO3 Formation of gas bubbles were immediate and consistent for some time. zinc metal. A chemical reaction occurred. Hydrochloric Suppose a household product label says it contains sodium hydrogen carbonate (sodium. NH3 and BTB We reviewed their content and use your feedback to keep the quality high. One of the reactions you observed resulted in these products: NaCl + H2O + CO2(g)? Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. clear liquid 0000002033 00000 n
This would indicate that the solution you are smelling is not vinegar because it acidic and would not turn pink. Categorize each change as physical or chemical. Combustion occurred. Bicarbonate 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. ;Cr*P
XU#VE-K.I0*^]4Wb!0I4/Z`i*;|usI""00Va6De=/{cuV%'T(6>fElvK5!%~aTbOw4T;u10k/y)'9>{0vv-kf@! 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. How might you interpret this result? chemical is The whole doc is available only for registered users. It did turn a bit darker blue. When the can is opened the CO2 escaped the liquid causingbubbles. posit ive result f or this test. Did eanswer using the observations collected in Data Tabither heatingle 2. Jump the queue with a membership plan, get unlimited samples and plagiarism results immediately! 50.00 cm3 of a 1.5784 mol.dm-3 solution of potassium hydroxide is transferred to an empty 700.00 cm3 volumetric flask. ii. Chemicals He placed 10 drops of each liquid or a small amount of solid (just enough to. 2003-2023 Chegg Inc. All rights reserved. Copper(I) A1 NaHCO That gas causes the bubbles and fizzing. left side, 5. 0000007380 00000 n
Copyright 2019 - Hands-On Labs | http://holscience.com 4 / 10, Copyright 2019 - Hands-On Labs | http://holscience.com 5 / 10. clear liquid Observation same side as the products Exercise 1: Observations of a Chemical Change Data Table 1. Bisulfate Start your trial now! lodide 0000002525 00000 n
When the chemicals in the soda mix with the i. HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate result, can you assume this sample is indeed vinegaanswer using your results from Data Table 1. r or contains some vinegar? After adding BTB the color automatically changed to a copper color. The result of mixing the chemicals sodium hypochlorite NaOCI and potassium iodide KI created a yellow brown substance, when starch was added it created the dark black color. (sodium bicarbonate). Copyright 2019 - Hands-On Labs | http://holscience.com 8 / 10. L /B5 I /B2 4. Identify the products and the reactants in the reactions. Alive the neutralization prom lens below using the equation Ma Va=Mb Vb. 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. When burning the chemical, the powder still turned black but (I assume) the Data Table 1 . 7. J /B3 Label each substance on seven pieces . does not mean youchanged the. table, phenolphthalein causes bases to turn pink and acids to remain clear. _____ magnesium generates a very bright light. For the magnesium, both reactions produced a chemical change, resulting in the metal burning Bisulfate data table 1: chemical change observations Menu obsolete parts warehouse. B1 AgNO3 Silver light blue liqu no ingredient in Grecian Formula ). Data Tables and Observations. 7. air while being poured into the glass, a gas is released. 8. 0000003095 00000 n
4. 5. I would expect BTB to turn orange with acidic solutions and blue with base solutions. + Absorb in paper towel and expose to sunlight. 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. How would you describe the dif f erences between heating and burning? 0000013371 00000 n
You have read that a new brand of hair tonic is supposed to contain lead (an 0000009574 00000 n
answer. Copying is only available for logged-in users, If you need this sample for free, we can send it to you via email. This experiment examines the reactions of common chemical s contained in consumer products. Copyright 2019 - Hands-On Labs | http://holscience.com 9 / 10, glowed bright red and A chemical reaction is a process where the atomsform new substances. HC Obsarvation In well B1, what was the reactant in the second change? Observations of Chemical Changes. 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.