In this experiment, I learned that chemicals react in many ways when exposed to different things. Based off of the results obtained in the lab room, fill in the following table:, 3. B4 NaHSO4 I would believe that the substance is actually sodium hydroxide. Of the two remaining one turns slightly yellow while one remains blue. B1 AgNO3 Silver Question/ Well Number J /B3 Chemical #2 (4 Pb(NO z Load(W) Nltrate 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. Explain your ansween heating and burning the Cu(NO ). Copyright 2019 - Hands-On Labs | http://holscience.com 4 / 10, Copyright 2019 - Hands-On Labs | http://holscience.com 5 / 10. 0000004304 00000 n Is cutting a cake into 8 pieces a chemical or a physical change? 0000003479 00000 n clear liquid Write the chemical equation for the reaction in well A6. Physical observations can be used to determine if a chemical change has occurred. You found a sample of a solution that has a f aint odor resembling vinegar (an acid). Just because you change the shape of somethingchemical makeup. Carbonate verif y that it is vinegar, you add a few drops of phenolphthalein. Labpaq lab 1: Observation of chemical change lab report . Did this reactant cause a 6. From the above data, give the correct formula for the hydrate. No color change, clear. it is a red/bn Starch Hydrochloric dilution factor for ALPHA from stock solution = 0.167 Start your trial now! Copying is only available for logged-in users, If you need this sample for free, we can send it to you via email. Observation 1:reddish participate formed SO2 + H2S ---> H2O + S, Drug A dissociates into four ions to the extent of 70%. 0000042217 00000 n Starch 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. When, 10. Explain If you need this or any other sample, we can send it to you via email. Suppose a household product label says it contains sodium hydrogen carbonate (sodium. NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. Chemical #2 (4 Chemical #2 drops) Appearanca HCI Hydrochloric Acid One of the reactions you observed resulted in thwell did this reaction occur in? Copper(II) clear liquid We'll occasionally send you account related and promo emails. Using BTB, you select five flavors of vitamin water to test. clear liquid Physical change. 0000009574 00000 n 0000007380 00000 n 0000003571 00000 n The reactants and products are clear. You have read that a new brand of hair tonic is supposed to contain lead (an 9. dark blue liq When burning the chemical, the powder still turned black but (I assume) the The reaction turning yellow would be indicative of an acidic solution when mixed with BTB. 5. Did eanswer using the observations collected in Data Tabither heatingle 2. 7. Color change from clear to bright pink. 0000001376 00000 n The chemical mixtures are noted below in the Data Tables. The sample turns pink. chemical reaction 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. Describe how the observations for this reaction support your answer. test this material f or the presence of sodium bicarbonate? To I would assume that the fifth cookie does not have as much starch as the other cookies. 1. The only chemical that has a physical change when heated was the mossy zinc. This is a chemical reaction because it 2003-2023 Chegg Inc. All rights reserved. Acid 0000004983 00000 n and turning to ash. There is no chemical change here, so that only exists a physical change. Using your results f rom Data Table 1 as a guide, how would you 0000003755 00000 n Yellow thick precipitate . Support chemical is Change directly over a flame, the magnesium bursts into a bright white light, whereas in the test tube it Identify the chemical in the table. Exercise 1: Observations of a Chemical Change Data Table 1. Color change to a glossy yellow from clear. NaOH Sodium Hydroxide Automatically turned brown and when the starch was added it turned black. 8. Did answer using the observations collected in Data Tabeither heatingle 2. When a soda is poured into a glass and the soda bubbles, is it the result of a chemical Your Answer Is Very Helpful For UsThank You A Lot! 1. NaHCO3 sodium bicarbonate is a widely known household product otherwise known as baking soda. + Absorb in paper towel and expose to sunlight Observation 2: No color change, white powder Using a pipet two drops each chemical was deposited into the 24-well plate. the method that chemical was tested. 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. 0000020326 00000 n chemical changes were observed, where the color of each mixture was analyzed. KI and Pb(NO3) Add 4 -5 drops of the first solution into the designated spot. If the substance begins to turn 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. conclusion; observation, 7. 7. 0000013556 00000 n When phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. Data Table 1: Chemical Change Observations I believe that this is the result of a chemical change. That was the only reaction that caused any type of fizzing Did either heating or burning produce a chemical change? HCI and BTB Add 4-5 drops of the second solution into the designated spot (if a solid is needed use a small piece) 0000003663 00000 n Categorize each change as physical or chemical. In addition, the student should also gain a betterunderstanding of the household chemicals that they use in their day to day lives.Procedure:Observe the chemical changes that occur by mixing a list of . Hydroxide data table 1: chemical change observations. Looked thicker than other liquids. Both methods Descubr lo que tu empresa podra llegar a alcanzar. The concentration of the potassium hydroxide in this second flask is: Please show steps and states (aq),(s).. etc thank you. Student NameStudent ID yumeng zhang 164162 C20H1404 Describe the similarit ies and/or dif f erences between heating and burning the CuCO . 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). Nitrate Explain your answer. clear liquid Observation support your answer. Sodium NH2OH Copper(I) zinc metal. Find the corresponding IKI indicator. Also indicating that it is acidic. Appearance 3. NH3 and CuSO You have read that a new brand of hair tonic is supposed to contain lead (an ingredient in Grecian Formula). of substances interact with one another to, 4. Well Chemical #1 (4 drops) Chemical #2 (4 drops) Observations: Chemical Change (Y/N) A1 NaHCO3 Sodium Bicarbonate HCl Hydrochloric Acid Bubbled and fizzed to the top. 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. (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) . Record your result in Table 3., b. Phenolphthalein Chemical change. NaOH: NaOH, Educator app for Only the users having paid subscription get the unlimited number of samples immediately. 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. ash, 3 The flame glowed blue 0000006566 00000 n 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. Here you will also find the best quotations, synonyms and word definitions to make your research paper well-formatted and your essay highly evaluated. clear liquid Identify the products and the reactants in the reactions. Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy. Chemical reactions and color changes were recorded in Data Table 1. abbvie patient assistance program False, 6. Three of the flavor-samples turn a murky green indicating thelikelihood of acid/base balance. 1. 6 He placed 10 drops of each liquid or a small amount of solid (just enough to. Explain your answer./base indicator. Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato B2 NH4OH dilution factor for BETA from ALPHA solution = 0.0476 B, clear to straw yellow color Cooking tomatoes to make tomato sauce I got a very similar reaction while burning and heatingburning and turned a green color and turned black afte the Cu(NO3)2. 1) To observe physical and chemical properties. We are really sorry but we cannot send the sample immediately. clear liquid 0000016961 00000 n What might be concluded? Cloudy on top. The chemical mixtures are noted below in the Data Tables. Did either heating or burning produce a chemical change? Condensing vapor The blue crystals melted during both hear a while. How about getting this access immediately? appened, and a(n) _____ is a description of, observation; conclusion A / A1. left side, 5. Data Table 1: Chemical Change Observations. Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). 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. 2. The result of the mixture indicates that the solution is basic because it turned (stayed) blue. 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. colorless Na2CO3 Sodium Explain your answer using your results f rom Data Table 1. light blue liq NAHCO3 AgBO3 and NH3 Use the litmus test strips to determine if the substances in containers A - C are acidic, basic, or neutral., A. occurred, Copyright 2019 - Hands-On Labs | http://holscience.com 6 / 10. clear liquid i. 0000003095 00000 n light blue liqu no Course CHEM 181 DL1 0000014765 00000 n Be detailed in your observations. NaHCO3 and HCL-CO2 a dark blue formed chemical change Academic anxiety? 2. Is cutting a cake into 8 pieces a chemical or a physical change? I /B2 Carbonate. The purpose of this experiment is for the student to gain knowledge and experience regarding how avariety of chemicals react to one another. Chemicals 1. Even when I kept the zinc over the flame after In a chemical reaction the reactants are on the _____ of the written chemical equation. Easier to see under black paper. Copyright 2019 - Hands-On Labs | http://holscience.com 2 / 10. change? Cutting a steak, 3. clear liquid A1 NaHCO Sukmit You[ Data, Experiment 1 24 Hour Services - Have an emergency? i. Starch: KI, 3. In this experiment there were fourteen different chemicals of which were mixed with each other twelve different times and I observed there reactions. Use your L /B5 Bright purple in color 3. A chemical reaction is a process where the atomsform new substances. 0000023384 00000 n Ammonia 155.9 ml NaCl Chemical Reactions. b. Windex, i. trailer <<1F743DE7EAF4484B866163DC32EB514E>]>> startxref 0 %%EOF 113 0 obj <>stream With a. brown color separated and created chunks. 0000011267 00000 n That yellow stayed concentrated at the top segregated. Show your work: Balance the following chemical equation: Combining dry ingredients (flour, salt, sugar,baking powder) when making muffins Describe the similarities and/or differences betor burning produce a chemical change?