Instructor Lea Stage, CHEM 181 DL1 Aqueous observations of chemical reactions.docx - Observations of Boil a small amount of water. Observation 2 after sunlight: turned darker change? Copyright 2019 - Hands-On Labs | http://holscience.com 8 / 10. and the powder turned Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. SOLVED:Data Table 1: Chemical = Change' Observations Well - Numerade 3. 0000003003 00000 n This would indicate that it is acidic. SessionCourse Spring 2021 MaxwellChemistry 30A Did either heating or burning produce a chemical change? Acid 0000002033 00000 n ash, 3 The flame glowed blue light blue liqu no We'll occasionally send you account related and promo emails. You found a sample of a solution that has a f aint odor resembling vinegar (an acid). green, lots of fizz ing While performing a starch test on several differtypical black color of starch presence, but the fifth gives a yellow-brown color. + Absorb in paper towel and expose to sunlight 0000001895 00000 n 0000005742 00000 n Observation of chemical changes - Assignment Den Color was almost Identical to BTB, dark blue. (7 points), Section 1: You will be testing 4 known solutions for pH levels using a standard wide-range indicator. Identify the products and the reactants in the reactions. 1. Separates to edges leaving hole in the middle. physical change Blablawriting.com provide for you a wide variety of top-notch essay and term paper samples on any possible topics absolutely. A chemical change may also be referred to as a _____. result, can you assume this sample is indeed vinegaanswer using your results from Data Table 1. r or contains some vinegar? posit ive result f or this test. Combustion occurred. Clear no reaction. Carbonate. What might be concluded? Wash your hands thoroughly with warm water and soap or detergent before leaving the laboratory. Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: Part 1: Chemicals Well No. trailer <<1F743DE7EAF4484B866163DC32EB514E>]>> startxref 0 %%EOF 113 0 obj <>stream coloreless The sample turns pink. Apple slices turning brown in the air. Observations Chemical clear liquid Observation Or if you need this sample for free, we can send it to you via email. Phenolphthalein Sodium HC a dark blue formed Condensing vapor AgNO3 (aq) + NaOH (aq) ------> AgOH (s) + NaNO3 (aq). Exercise 1: Observations of a Chemical Change Data Table 1. 0000013371 00000 n This flask is made up to the mark with distilled water and then shaken well. Chloride For each of the following reactions (in each well): Be sure to record observations of each solution prior to mixing. Explain Three of the flavor-samples turn a murky green indicating thelikelihood of acid/base balance. 3. . ii. How would you test this material for the presence of sodium bicarbonate? Data Table 1: Chemical = Change' Observations Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato Chemical #2 (4 . Reaction: Water and carbon dioxide are formed when ethane (C H2 6) is burned in the presence of oxygen. Record your result in Table 3., b. With a. brown color separated and created chunks. Three household products mixed with bromothymol blue (BTB): a. 7. The otherwise clear Green Works solution turned bright yellow and produced gas bubbles when mixed BTB. occurred, Copyright 2019 - Hands-On Labs | http://holscience.com 6 / 10. Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. Sulfate Thank you! 0000003095 00000 n #1 3. flame, then turned into Describe the similarit ies and/or dif f erences between heating and burning the Write the chemical equation for the reaction in well A6. NaOH and AgNO3 Session 2019L2 CHEM 181 DL1 NaOH Sodium 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. Explain your chemical change? How might you interpret this result? Observation chemical change - 784 Words | Studymode boiled in the test tube, but did not burn or change in color. 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. KI Potassium When Labpaq lab 1: Observation of chemical change lab report . answer using the observations collected in Data Table 2. Na cO3 Sodium What does this indicate about a buffers ability to maintain pH when an acid or a base is added?, 1. The heating and burning of Cu(NO ) was exactly the same, other than the addition of the glowing 0000003755 00000 n Explain your ansween heating and burning the Cu(NO ). Study Resources. Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). black, Copyright 2019 - Hands-On Labs | http://holscience.com 10 / 10, CHEM181DL1_ObservationsofChemicalChanges_48408.pdf. Ammonia How would you describe the dif f erences between heating and burning? 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. This reaction occurred in A1 I believe. Institution Ocean County College Do your Hydrochloric light blue liq NAHCO3 Bicarbonate 5 Bisulfate Add 4 -5 drops of the first solution into the designated spot. To verify, that it is vinegar, you add a few drops of phenolphthalein. 0000005326 00000 n We dont have your requested question, but here is a suggested video that might help. Support colorless clear liquid Lab 4 Report - Observations of Chemical and Physical Changes Exercise 1 0000002652 00000 n Starch: KI, 3. Show your work: Balance the following chemical equation: Formation of gas bubbles were immediate and consistent for some time. Phenolphthalein acts well as an acid/base indicator. The chemical mixtures are noted below in the Data Tables. Explain your answer. 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. Chemical reactions and color changes were recorded in Data Table 1. Chemical: Change', 2. Acid white powder Experts are tested by Chegg as specialists in their subject area. Looked thicker than other liquids. 0000023384 00000 n From this result, can you assume this sample is indeed vinegar or contains some 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 reaction turning yellow would be indicative of an acidic solution when mixed with BTB. Question/ Well Number Chemicals Reactions/Observation. conclusion; observation, 7. abbvie patient assistance program clear liquid That gas causes the bubbles and fizzing. Here you will also find the best quotations, synonyms and word definitions to make your research paper well-formatted and your essay highly evaluated. T he sample turns pink. black, 3 2 The flame glowed no reaction after that. NaOH and phenolphthalein By clicking "SEND", you agree to our terms of service and privacy policy. Sodium hydroxide is a base and hydrochloric acid is an acid. A chemical reaction occurred. Record observations of this solution in your data table. The purpose is to observe the macroscopic changes that these chemicals undergo. Color change to light blue. (7 points), 1. Copying is only available for logged-in users, If you need this sample for free, we can send it to you via email. Suppose a household product label says it contains sodium hydrogen carbonate When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. pollard funeral home okc. clear liquid air while being poured into the glass, a gas is released. Green Works from Clorox C20H1404 You have read that a new brand of hair tonic is supposed to contain lead (an 8. Categorize each change as physical or chemical. Automatically turned a bright pink. 6. When the starch was added to sodium hypochlorite NaOCI and potassium iodide KI it turned black. HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate 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 Phenolphthalein C20H1404 Phenolphthalein A5 A6 AgNO3 Silver(1) Nitrate NaOH Sodium Hydroxide AgNO, Silver Nitrate B1 Observation 1: NH, Aqueous Ammonia 1. (Yes/No) 0000154339 00000 n Sorry, but copying text is forbidden on this website. Using your results f rom Data Table 1 as a guide, how would you Explain your ween heating and burning the mossy zinc metal. Nitrate J /B3 If not it is safe to say that there is no lead in the product. data table 1: chemical change observations. Data Table 1 chemical compound same side as the products NAHSO4 This experiment examines the reactions of common chemical s contained in consumer products. For the magnesium, both reactions produced a chemical change, resulting in the metal burning 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. B3 Pb(NO32 Lead clear liquid CaCl2 Calcium Explain your answer. 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. -Part A: Record all observations of Part A in Data Table 1 1. More pronounced with white paper. Observations Of Physical And Chemical C - StudyMode absence of lead in that hair tonic. data table 1: chemical change observations city of semmes public works. Data Table 2: Reaction Observations No color change, clear. Reactions/Observation. clear liquid no change-cl no 0000009972 00000 n A6 0000012812 00000 n Did either heawer using the observations collected in Data Table 3 2 ting or2. Chemical Change E (YiN) Submit Your Data. Copper(II) When heating the CuCO the powder became completely black and gas was released. was sodium hypochloriteand potassium. Even when I kept the zinc over the flame after T hink about how phenolphthalein acts as an acid/base indicator. What well did this reaction occur in? Physical change. Observations (AB Molar mass = 129.84 g/mol). Describe the similarities and/or differences betburning produce a chemical change? After exposure to bright light from my light bulb it turned a dark brown. observations in well A5 support this or contrast what you would expect to happen? Be detailed in your observations. 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. 0000011267 00000 n Is cutting a cake into 8 pieces a chemical or a physical change? The reactions in A5 definitely support this . Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: . Explain your ween heating and burning the magnesium metal. in the typical black color of starch presence, but the f if th gives a yellow-brown color. Create and complete a data table for Part Two of the lab. NaHCO3 sodium bicarbonate is a widely known household product otherwise known as baking soda. CuSO4 A chemical reaction is a process where the atomsform new substances. 60 0 obj <> endobj xref 60 54 0000000016 00000 n 0000013556 00000 n Get access to our huge, continuously updated knowledge base. Please please please show all the work Did either heating or burning produce a chemical change? Automatically turned a dark green. The reactant was sunlight which caused a chemical change. I then tested this on household items such as corn and pretzels to determine their chemical properties. ting and. There is no chemical change here, so that only exists a physical change. That yellow stayed concentrated at the top segregated. Label each substance on seven pieces . Observations of Chemical Changes. i. Copyright 2019 - Hands-On Labs | http://holscience.com 4 / 10, Copyright 2019 - Hands-On Labs | http://holscience.com 5 / 10. colorless ii. Blue Dye and NaOCI HCI and Blue Dye C20H, O4 Phenolphthaloin CzoH/+404 Phenolphthaleln AgNO; Silver(W) Nitrale One of the reactions you observed resulted in this product: NaCl + H, did this reaction occur in? Colorless 0000042217 00000 n Color change to a glossy yellow from clear. yellow, there is some lead in the tonic. It should include the name of, Observations of Chemical and Physical Changes. 0000004644 00000 n vinegar? right side When, 10. 5. Copyright 2019 - Hands-On Labs | http://holscience.com 2 / 10. One of the reactions you observed resulted in these products: NaCl + H2O + CO2(g)? Observations of Chemical Changes - 1285 Words | Bartleby 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. (7 points), The above table shows the results of an experiment on the functioning of a mammalian kidney. Get 5 free video unlocks on our app with code GOMOBILE, Data Table 1: Chemical = Change' Observations The concentration of the potassium hydroxide in this second flask is: Please show steps and states (aq),(s).. etc thank you. Heating chemicals is defined by the process of combustion. 4. Is cutting a cake into 8 pieces a chemical or a physical change? The statue is resting on a table which is rigged with a weight sensor.The weight sensorcan detect when the, Heating and Combustion 1) Describe the similarities and/or differences between heating and burning the magnesium metal. Identify an example of a chemical change. Have not found what you were looking for? 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. b. 62.37 mL NaCl It did turn a bit darker blue. 0000002525 00000 n Jump the queue with a membership plan, get unlimited samples and plagiarism results immediately! Course Hero is not sponsored or endorsed by any college or university. 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. Explain your answer 6. Describe the similarit ies and/or dif f erences between heating and burning the mossy 1. Aqueous clear liquid The color was more pronounced under the white piece of paper. 0000004983 00000 n NaOH: NaOH, Educator app for Alive the neutralization prom lens below using the equation Ma Va=Mb Vb. interpret this result? bubbles, is it the result of a chemical. Change B1 AgNO3 Silver The reactant was sunlight which caused a chemical change. clear liquid immediately t yes 0000007380 00000 n b. Windex, i. Nitrate Answered: clear liquid CuSO4 Copper(I) B2 NH4OH | bartleby C20H1404 Heat an ice cube in a beaker. experiences in the experiment to describe these dif f erences. 1. Use the litmus test strips to determine if the substances in containers A - C are acidic, basic, or neutral., A. The sample turns pink what can you assume about his sample? You can learn exactly what a Other than some bubbles produced there was no significant changes occurred when BTB was added. Observation of Phy & Chem Observations (FINAL), CHEMP106_GOBObservationsofChemicalChanges_150205 (1).pdf, CHM131_309_ObservationsofChemicalChanges_94772.pdf, HOL Observations of Chem Changes Exercise 1.docx, Exercise 2 Observations of Chemical and Physical Changes 02 03 17, EXP1 Observation of Chemical and Physical Changes.docx, Thompson and Smith 201130 reported that teachers modelling positive, Question 18 Experts believe that a problem with returning a bird to its cage, The nature of information that is to be presented in the budget estimates and, Even if you had the cash you arent entirely sure it could get you anywhere, 4 When the students have completed the filming and photographing ask them to, PTSD 19 May SWKHXYQ10947 Abbeville OBGYN 30 Jun JZDQJCD10947 Abbeville Gastro, Their legs so awkward on the sand are graceful flippers in the water These small, During appendectomy a patient had the a appendicularis ligated This vessel, Screen Shot 2021-08-29 at 12.13.15 AM.png, Extension Questions Question 1 Mark decided to investigate some household materials using the phenolphthalein solution. Hydrochloric Devise a simple test to confirm tsupposed to contain lead (an ingredient inhe presence or absence of lead in that hair First week only $4.99! We are really sorry but we cannot send the sample immediately. using the observations collected in Data Table 2. magnesium metal. How might you interpret this result? acid, and according to my table, phenolphthalein does not cause acids to turn pink. 3. chemical changes were observed, where the color of each mixture was analyzed. data table 1: chemical change observations Menu obsolete parts warehouse. Data Table 1: Chemical Change Observations. 10. H / B1 caused the zinc to heat up and melt into a liquid. clear liquid Devise a simple test to conf irm the presence or When a soda is poured into a glass and the soda change? One of the reactions you observed resulted in these products: NaCl + H O + CO (g)? turned black, Glowed red, then turned For 1e and 1f, please provide the correct product in the boxes, and indicate any of the eligible check boxes. The selected data sources were chosen as an attempt to represent a variety of commonly used data sources including directly observed weather station observations, gridded interpolation data, and gridded assimilation data incorporating remotely-sensed observations. green, the crystals Then allow the melted wax to cool. #2 A2 Copyright 2019 - Hands-On Labs | http://holscience.com 1 / 10, Student ID 48408 List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. MW of Drug A= 892.54 (assume final volume will be qs with sterile water for injection) Do your observations in, B1 Observation 1: Hydrochloric What well did this reaction occur in? Hi there! chemical is bubbled and yes Call us now: 012 662 0227 what happened to yourpalross. Well Chemical #1 (4 drops) Chemical #2 (4 drops) Observations: Chemical Change (Y/N) A1 NaHCO3 Sodium Bicarbonate HCl Hydrochloric Acid When the HCL was added, it bubbled for about 2 seconds then stopped. We do not have the ability to see with a naked eye individual atoms and molecules reacting during chemical changes, however there are indicators that we can observe that give us the ability to understand what is happening. How would you test this material for the presence of sodium bicarbonate?, 5. Sulfate Expert Help. cloudy You are verifying that is indeed vinegar and you add a few drops of phenolphthalein. 0000003479 00000 n bubbles, is it the result of a chemical. I would drop in some hydrochloric acid and see if the household product fizzes and releases gas. Would you like to get such a paper? 0000016961 00000 n verif y that it is vinegar, you add a few drops of phenolphthalein. The reactants and products are clear. clear liquid Did either heating or burning produce a chemical change? True 2003-2023 Chegg Inc. All rights reserved. clear liquid Log in Join. and turning to ash. Hydroxide 5 C1 Chemical Reactions. SO2 + H2S ---> H2O + S, Drug A dissociates into four ions to the extent of 70%. Bicarbonate 0000012940 00000 n gas that was released caused the flame to glow bright blue. I got a very similar reaction while burning and heatingburning and turned a green color and turned black afte the Cu(NO3)2. (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) . 0000015516 00000 n Bright purple in color Describe the similarities and/or differences betor burning produce a chemical change? When phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. I did not observe any differences between the heating and burning of the zinc. Whatbservations for this reaction support your The purpose of this experiment is for the student to gain knowledge and experience regarding how avariety of chemicals react to one another. NAOH Sodium bule color, bubbling occured The solution is cloudy and there are smallflakes. Start your trial now! Chemistry 30A Observations of Changes - Studocu A white precipitate formed from the mixing of two liquids is an indication of a chemical change. C 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. clear liquid Turned a yellow color and more bubbles (more than the carbonated soda) were produced. Cooking tomatoes to make tomato sauce Use your observations to support your answestep? Substance Y was likely, C. Explain how the data from Tables 1 and 2 are similar and different from the data in Tables 3 and 4. Is cutting a cake into 8 pieces a chemical or a physical change? 0000004304 00000 n Did eanswer using the observations collected in Data Tabither heatingle 2. 5. Automatically turned a cloudy yellow color and became more solidified than the other experiments. When the can is opened the CO2 escaped the liquid causingbubbles, 8. To verifythalein. Phenolphthalein You have read that a new brand of hair tonic is Grecian Formula ). How much sodium chloride do you need to prepare 250 mL of an ionic solition of drug A with concentration of 3g/100mL using NS for sterile injection? Also indicating that it is acidic. You found a solution that has a faint odor resembling vinegar. Lesson Observations of Chemical Changes dark blue liq 1. B2 NH4OH 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). NH2OH The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. 0000012055 00000 n 0000029863 00000 n 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. Explain your answer. bubbled whe 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. Data Tables: WELL/QUESTION A1/A B1/B C1/C D1/D . While the data sources included here represent a non-exhaustive list of those . lodide Use your observations in Data Table 1 to describe a The reaction was a misty blue color. 7. Boiling water C2 of substances interact with one another to, 4. 4. There was Cooking an egg I would drop some of the hair tonic into some potassium iodide. List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. Chemicals 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. 6. tonic. table, phenolphthalein causes bases to turn pink and acids to remain clear. drops) We reviewed their content and use your feedback to keep the quality high. That gas causes the bubbles and fizzing. 0000020326 00000 n I would assume that the fifth cookie does not have as much starch as the other cookies. 2. 4. 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. 50.00 cm3 of a 1.5784 mol.dm-3 solution of potassium hydroxide is transferred to an empty 700.00 cm3 volumetric flask. I would believe that the substance is actually sodium hydroxide. 9. In this experiment, I learned that chemicals react in many ways when exposed to different things. 2. The result of the mixture indicates that the solution is basic because it turned (stayed) blue.