The reactant was sunlight which caused a chemical change. Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. CuSO4 Heating chemicals is defined by the process of combustion. I would assume that the fifth cookie does not have as much starch as the other cookies. How would you test this material for the presence of sodium bicarbonate?, 5. It melted and True 2. Use your observations in Data Table 1 to describe a Burning flame, then turned into Describe the similarities and/or differences betor burning produce a chemical change? Suppose a household product label says it contains sodium hydrogen carbonate (sodium. 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. flame when heated. Get original paper in 3 hours and nail the task . After adding BTB the color automatically changed to a copper color. looks the san yes Explain your answer. How about getting this access immediately? NaOH Sodium turned black, Glowed red, then turned (Yes/No) Data Table 1: Investigation of the Weight of Carbon Step 1: Make Baking Soda Observations Vinegar Cu(NO ) . More pronounced with white paper. I believe that this is the result of a chemical change. physical change 0000004644 00000 n From the above data, give the correct formula for the hydrate. Devise a simple test to confirm the presence or absence of lead in that hair product. Think about how phenolphthalein acts as an acidwell A5 support this or contrast what you would expect to happen? Did either heating or burning produce a chemical change? your answer using the observations collected in Data Table 2. Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on clear liquid The reactant was sunlight which caused a chemical change. Copyright 2019 - Hands-On Labs | http://holscience.com 4 / 10, Copyright 2019 - Hands-On Labs | http://holscience.com 5 / 10. Expert Help. posit ive result f or this test. We are really sorry but we cannot send the sample immediately. b. became a da yes chemical is bubbled and yes using the observations collected in Data Table 2. Cooking tomatoes to make tomato sauce C20H1404 0000013371 00000 n Separates to edges leaving hole in the middle. Explain your answer. Observations of Chemical Changes. Boiling water 9. T he sample turns pink. Is cutting a cake into 8 pieces a chemical or a physical change? 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. The chemical mixtures are noted below in the Data Tables. drops) 0000003663 00000 n Data Table 1: Chemical Change Observations. 0000156016 00000 n 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. 0000002911 00000 n 6 The main objectives . Reaction: Water and carbon dioxide are formed when ethane (C H2 6) is burned in the presence of oxygen. left side, 5. Question/ Well Number Write the chemical equation for the reaction in well A6. I also learned that these chemical reactions could be very 0000005326 00000 n 0000009972 00000 n Explain your, From the experiment I just preformed I would say there iodide present, but no starch. Student NameStudent ID yumeng zhang 164162 white powder same side as the products Pb(NO z Load(W) Nltrate Both methods 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. 0000020789 00000 n 0000012055 00000 n Turned blue & precipitate formed, at bottom Explain your answer. 2. 5. (AB Molar mass = 129.84 g/mol). Blue Dye and NaOCI 3. Chemical change. A _____ is a change in the form of a substance. #1 2 No chemical reaction occurred. 0000023384 00000 n Nitrate Data Table 1: Chemical Change Observations. There was The chemical mixtures are noted below in the Data Tables. a dark blue formed . Did either heawer using the observations collected in Data Table 3 2 ting or2. The purpose is to observe the macroscopic changes that these chemicals undergo. ii. physical change, 2. Copper(II) 0000154339 00000 n So, according to the tonic. I /B2 The result of the mixture indicates that the solution is basic because it turned (stayed) blue. 6. Lesson Observations of Chemical Changes B1 AgNO3 Silver Copying is only available for logged-in users, If you need this sample for free, we can send it to you via email. The reaction was clear. 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 You are verifying that is indeed vinegar and you add a few drops of phenolphthalein. B4 NaHSO4 0000010561 00000 n yellow, there is some lead in the tonic. 0000013648 00000 n (7 points), Section 1: You will be testing 4 known solutions for pH levels using a standard wide-range indicator. Find the corresponding IKI indicator. 6. 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. (7 points), 1. 0000002033 00000 n HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate In well B1, what was the reactant in the second change? By continuing well assume youre on board with our cookie policy, A limited time offer! J /B3 1 Shredding paper Acquire a clean spot plate. No color change, clear. 0000004983 00000 n Copyright 2019 - Hands-On Labs | http://holscience.com 9 / 10, glowed bright red and 0000003095 00000 n 9. With a. brown color separated and created chunks. part c and d? 6. 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. 0000020326 00000 n How would you describe the dif f erences between heating and burning? After exposure to bright light from my light bulb it turned a dark brown. However when it was mixed with a base solution it turned pink. I would expect BTB to turn orange with acidic solutions and blue with base solutions. 0000004304 00000 n Of the two remaining one turns slightly yellow while one remains blue. 0000013464 00000 n Instructor Lea Stage, CHEM 181 DL1 The color was more pronounced under the white piece of paper. ;Cr*P XU#VE-K.I0*^]4Wb!0I4/Z`i*;|usI""00Va6De=/{cuV%'T(6>fElvK5!%~aTbOw4T;u10k/y)'9>{0vv-kf@! starch has not been removed completely, but is in a lesser quantity than the others. Phenolphthalein Describe how the oese products: NaCl + H O + CO (g)? The otherwise clear Green Works solution turned bright yellow and produced gas bubbles when mixed BTB. Wash your hands thoroughly with warm water and soap or detergent before leaving the laboratory. Is cutting a cake into 8 pieces a chemical or a physical change? Identify the chemical in the table. zinc metal. Do not sell or share my personal information. 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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 . 0000003755 00000 n turned to a w yes Bisulfate The concentration of the potassium hydroxide in this second flask is: Please show steps and states (aq),(s).. etc thank you. A1 NaHCO and the powder turned False, 6. Support By clicking "SEND", you agree to our terms of service and privacy policy. When, 10. 2. Experts are tested by Chegg as specialists in their subject area. If so, it most likely has sodium bicarbonate in it. Explain your answer Color turned brown-looks thicker 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. clear liquid immediately t yes Academic anxiety? light blue liqu no Aqueous In a chemical reaction the reactants are on the _____ of the written chemical equation. Descubr lo que tu empresa podra llegar a alcanzar. Blablawriting.com provide for you a wide variety of top-notch essay and term paper samples on any possible topics absolutely. How might you interpret this result? Copyright 2019 - Hands-On Labs | http://holscience.com 3 / 10, Data Table 1: Chemical Change Observations. clear liquid 0000016961 00000 n Observation 2 after sunlight: turned darker 50.00 cm3 of a 1.5784 mol.dm-3 solution of potassium hydroxide is transferred to an empty 700.00 cm3 volumetric flask. Is cutting a cake into 8 pieces a chemical or a physical change? Color change to light blue. Bisulfate When the can is opened the CO2 escaped the liquid causingbubbles, 8. That was the only reaction that caused any type of fizzing To This would indicate that it is acidic. answer using the observations collected in Data Table 2. clear liquid CuSO4 That gas causes the bubbles and fizzing. Chemical Reactions. Be detailed in your observations. Describe the similarit ies and/or dif f erences between heating and burning the mossy (sodium bicarbonate). 0000003312 00000 n The solution is cloudy and there are smallflakes. Then allow the melted wax to cool. 0000009027 00000 n From this result, can you assume this sample is indeed vinegar or contains some Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. Bicarbonate Thank you! Chemical Reactions. Do your Identify whether each statement is an observation or a conclusion. 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. and turning to ash. Vinegar is made up to acetic Did answer using the observations collected in Data Tabeither heatingle 2. state of matter. : an American History (Eric Foner), Determining Water Hardness Using a Titrator, Lab Report Ex 7 Temperature on Equilibrium, United States History, 1550 - 1877 (HIST 117), Human Anatomy And Physiology I (BIOL 2031), Strategic Human Resource Management (OL600), Concepts of Medical Surgical Nursing (NUR 170), Expanding Family and Community (Nurs 306), Basic News Writing Skills 8/23-10/11Fnl10/13 (COMM 160), American Politics and US Constitution (C963), Professional Application in Service Learning I (LDR-461), Advanced Anatomy & Physiology for Health Professions (NUR 4904), Principles Of Environmental Science (ENV 100), Operating Systems 2 (proctored course) (CS 3307), Comparative Programming Languages (CS 4402), Business Core Capstone: An Integrated Application (D083), 315-HW6 sol - fall 2015 homework 6 solutions, 3.4.1.7 Lab - Research a Hardware Upgrade, BIO 140 - Cellular Respiration Case Study, Civ Pro Flowcharts - Civil Procedure Flow Charts, Test Bank Varcarolis Essentials of Psychiatric Mental Health Nursing 3e 2017, Historia de la literatura (linea del tiempo), Is sammy alive - in class assignment worth points, Sawyer Delong - Sawyer Delong - Copy of Triple Beam SE, Conversation Concept Lab Transcript Shadow Health, Leadership class , week 3 executive summary, I am doing my essay on the Ted Talk titaled How One Photo Captured a Humanitie Crisis https, School-Plan - School Plan of San Juan Integrated School, SEC-502-RS-Dispositions Self-Assessment Survey T3 (1), Techniques DE Separation ET Analyse EN Biochimi 1, Chemistry : The Molecular Nature of Matter and Change. Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato Hydroxide The sample turns pink. Explain your ansween heating and burning the Cu(NO ). For the magnesium, both reactions produced a chemical change, resulting in the metal burning Chemical #2 (4 Condensing vapor 4. %PDF-1.6 % True Explain your answer. One of the reactions you observed resulted in these products: NaCl + H2O + CO2(g)? change? 0000045990 00000 n product might be made out of from watching the reaction it has with heat, air, or water. support your answer. 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. 3. Acid Carbonate. answer. in the beginni yes I did not observe any differences between the heating and burning of the zinc. 0000014765 00000 n Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy. Turned a dark orange color. Explain A / A1. When a soda is poured into a glass and the soda change? While performing a starch test on several differtypical black color of starch presence, but the fifth gives a yellow-brown color. clear liquid immediately t yes Nitrate Physical observations can be used to determine if a chemical change has occurred. _____ magnesium generates a very bright light. Record your result in Table 3., b. 0000002819 00000 n Carbonate For 1e and 1f, please provide the correct product in the boxes, and indicate any of the eligible check boxes. d. Clementine Izzy First week only $4.99! You found a sample of a solution that has a fainthat it is vinegar, you add a few drops of phenolpht odor resembling vinegar (an acid). 5. L /B5 A white precipitate formed from the mixing of two liquids is an indication of a chemical change. A chemical change may also be referred to as a _____. The reaction was a misty blue color. Phenolphthalein Bright purple in color AgBO3 and NH3 Apple slices turning brown in the air. When 10.00 mL of solution BETA is then diluted to 25.00 mL, producing solution GAMMA. You have read that a new brand of hair tonic is Grecian Formula ). Coal hypothesis = It activated carbon is added to a beaker with 100mL of water, then it will increase the pH over 48 hours., 1. Based off of the results obtained in the lab room, fill in the following table:, 3. Cutting a steak, 3. Observation of Physical and Chemical Changes, Exercise 1: Observations of a Chemical Change. Explain your answer./base indicator. city of semmes public works. Course Hero is not sponsored or endorsed by any college or university.
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