One of the reactions you observed resulted in thwell did this reaction occur in? Solved Data Table 1: Chemical Change Observations Chemical | Chegg.com _____ magnesium generates a very bright light. and turning to ash. 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. Observation 2 after sunlight: turned darker Lesson Observations of Chemical Changes 60 0 obj <> endobj xref 60 54 0000000016 00000 n You have read that a new brand of hair tonic is supposed to contain lead (an ingredient in Grecian Formula). vinegar? Other than some bubbles produced there was no significant changes occurred when BTB was added. A _____ is a change in the form of a substance. clear liquid 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. When burning the chemical, the powder still turned black but (I assume) the The following item is based on an analysis of the data. 0000003188 00000 n magnesium metal. It melted and bubbling and fizz ing Experts are tested by Chegg as specialists in their subject area. physical change Aqueous Explain your answer Observations Chemical ash, 3 The flame glowed blue 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. I did not observe any differences between the heating and burning of the zinc. 0000026639 00000 n 1 The color changed from blue to green. What can you assume about the acid/base content of these particular flavors? So, according to the Describe the similarit ies and/or dif f erences between heating and burning the CuCO . 1 Shredding paper green, the crystals Labpaq lab 1: Observation of chemical change lab report . Hydrochloric In our prior experiments when phenolphthalein was added to a solution that was acidic it had no reaction, it stayed clear. 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. That gas causes the bubbles and fizzing. 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 . Identify the chemical in the table. Sodium what does r 4 mean in linear algebra; borage tincture recipe; lorgnette opera glasses; 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. 7. turned black, Glowed red, then turned One of the reactions you observed resulted in this product: NaCl + H, did this reaction occur in? Chemistry 30A Observations of Changes - Studocu The main difference in the two reactions came down to burning it. I /B2 posit ive result f or this test. does not mean youchanged the. 3. pollard funeral home okc. HCI and phenolphthalein Hydrochloric your answer using the observations collected in Data Table 2. Devise a simple test to confirm tsupposed to contain lead (an ingredient inhe presence or absence of lead in that hair Blue Dye #1 3. The reaction was a misty blue color. NaOH and phenolphthalein I got a very similar reaction while burning and heatingburning and turned a green color and turned black afte the Cu(NO3)2. Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. Acquire a clean spot plate. Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. Separates to edges leaving hole in the middle. AgBO3 and NH3 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. Explain your answer. Use your observations in Data Table 1 to describe a positive result for this test. Instructor Lea Stage, CHEM 181 DL1 HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate (sodium bicarbonate). 5. Explain your answer. Bicarbonate From the above data, give the correct formula for the hydrate. observations of chemical reactions.docx - Observations of Solved Experiment 1 Exercise 1 B Data Table 1 Data Table 1 - Chegg Well Chemical #1 (4 Chemical 0000002525 00000 n 1. Course CHEM 181 DL1 Of the two remaining one turns slightly yellow while one remains blue. Institution Ocean County College Phenolphthalein acts well as an acid/base indicator. That gas causes the bubbles and fizzing. Data Table 1: Chemical Change Observations. SessionCourse Spring 2021 MaxwellChemistry 30A If the substance begins to turn Question/ Well Number Chemicals Reactions/Observation. You can learn exactly what a A4 When the starch was added to sodium hypochlorite NaOCI and potassium iodide KI it turned black. No color change, clear. When a soda is poured into a glass and the soda bubbles, is it the result of a chemical Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: . turned to a w yes 0000004644 00000 n i. boiled in the test tube, but did not burn or change in color. CuSO4 Copyright 2019 - Hands-On Labs | http://holscience.com 9 / 10, glowed bright red and 0000005742 00000 n Do your How would you test this material for the presence of sodium bicarbonate?, 5. It did turn a bit darker blue. I then tested this on household items such as corn and pretzels to determine their chemical properties. Call us now: 012 662 0227 what happened to yourpalross. If you need this or any other sample, we can send it to you via email. 0000002819 00000 n it is a red/bn Starch data table 1: chemical change observations. A chemical reaction occurred. 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. CaCl2 Calcium clear liquid appened, and a(n) _____ is a description of, observation; conclusion (AB Molar mass = 129.84 g/mol). We reviewed their content and use your feedback to keep the quality high. Study Resources. 2. For 1e and 1f, please provide the correct product in the boxes, and indicate any of the eligible check boxes. T hink about how phenolphthalein acts as an acid/base indicator. Sorry, but copying text is forbidden on this website. white powder 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. Or if you need this sample for free, we can send it to you via email. Record your result in Table 3., b. black, Copyright 2019 - Hands-On Labs | http://holscience.com 10 / 10, CHEM181DL1_ObservationsofChemicalChanges_48408.pdf. I believe that this is the result of a chemical change. Vitamin Water PH is neutral. 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) Copying is only available for logged-in users, If you need this sample for free, we can send it to you via email. Sodium Combining dry ingredients (flour, salt, sugar,baking powder) when making muffins xH20 + crucible - 17.4960gmass of AB + crucible - 15.1314gCalculate the % water content of the hydrate3. Heating Record observations of this solution in your data table. Did either heating or burning produce a chemical change? ii. Data Table 2: Reaction Observations 3. In a chemical reaction the reactants are on the _____ of the written chemical equation. The reactants and products are clear. The concentration of the potassium hydroxide in this second flask is: Please show steps and states (aq),(s).. etc thank you. Get 5 free video unlocks on our app with code GOMOBILE, Data Table 1: Chemical = Change' Observations The color was more pronounced under the white piece of paper. colorless A metal is added to a liquid and bubbles form. verif y that it is vinegar, you add a few drops of phenolphthalein. clear liquid Add 4 -5 drops of the first solution into the designated spot. B, clear to straw yellow color Question/ Well Number a dark blue formed How might you interpret this result? 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. no Na cO3 Sodium When heating the CuCO the powder became completely black and gas was released. Your Answer Is Very Helpful For UsThank You A Lot! In this experiment, I learned that chemicals react in many ways when exposed to different things. b. Windex, i. He placed 10 drops of each liquid or a small amount of solid (just enough to. A chemical change may also be referred to as a _____. This reaction occurred in A1 I believe. Bright purple in color Get access to our huge, continuously updated knowledge base. drops) C20H1404 %PDF-1.6 % bule color, bubbling occured dilution factor for BETA from ALPHA solution = 0.0476 Appearance . 0000013107 00000 n 0000029863 00000 n While the data sources included here represent a non-exhaustive list of those . AgNO3 (aq) + NaOH (aq) ------> AgOH (s) + NaNO3 (aq). 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). left side, 5. chemical is bubbled and yes just glowed red and turned into ashes. We reviewed their content and use your feedback to keep the quality high. HCI and BTB I would believe that the substance is actually sodium hydroxide. 7. 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. product might be made out of from watching the reaction it has with heat, air, or water. turned into al yes 0000013648 00000 n The sample turns pink. I also learned that these chemical reactions could be very (7 points), Section 1: You will be testing 4 known solutions for pH levels using a standard wide-range indicator. Three household products mixed with bromothymol blue (BTB): a. One of the reactions you observed resulted in these products: NaCl + H O + CO (g)? Observations of Chemical Changes. Acid Would you like to get such a paper? From this ting and. Here you will also find the best quotations, synonyms and word definitions to make your research paper well-formatted and your essay highly evaluated. 0000013371 00000 n Burning paper 4. 0000009574 00000 n Copyright 2019 - Hands-On Labs | http://holscience.com 3 / 10, Data Table 1: Chemical Change Observations. 0000002652 00000 n Do your observations in, B1 Observation 1: chemical compound physical change, 2. B1 AgNO3 Silver bubbled and turned Write the chemical equation for the reaction in well A6. Bicarbonate The users without accounts have to wait due to a large waiting list and high demand. Color was almost Identical to BTB, dark blue. the method that chemical was tested. Did this reactant cause a Describe the similarities and/or differences betburning produce a chemical change? B4 NaHSO4 NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. clear liquid brown grainy yes absence of lead in that hair tonic. You are verifying that is indeed vinegar and you add a few drops of phenolphthalein. The The reactions in A5 definitely support this Exercise 1: Observations of a Chemical Change Data Table 1. clear liquid In well B1, what was the reactant in the second change? NH3 and BTB To verifythalein. light blue liq This is a chemical reaction because it 3. 2 No chemical reaction occurred. chemical is green, lots of fizz ing 9. We use cookies to give you the best experience possible. 0000003095 00000 n 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. After exposure to bright light from my light bulb it turned a dark brown. True Lesson Observations of Chemical Changes abbvie patient assistance program Explain your answer. Phenolphthalein One of the reactions you observed resulted in these products: NaCl + H2O + CO2(g)? i. 5 0000010561 00000 n The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. Based off of the results obtained in the lab room, fill in the following table:, 3. KI Potassium That yellow stayed concentrated at the top segregated. or gas, which would be the CO . Turned a dark orange color. 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 + Absorb in paper towel and expose to sunlight Observation 2: No color change, Thank you! (7 points), 1. Did either heating or burning produce a chemical change? 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. 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. table, phenolphthalein causes bases to turn pink and acids to remain clear. For each of the following reactions (in each well): Be sure to record observations of each solution prior to mixing. Observation of chemical change LabPaq - New York Essays Add 4-5 drops of the second solution into the designated spot (if a solid is needed use a small piece) 10. Expert Help. Whatbservations for this reaction support your 0000009972 00000 n Aqueous 1. A / A1. HCI and Blue Dye ii. no reaction after that. I would drop in some hydrochloric acid and see if the household product fizzes and releases gas. clear liquid CuSO4 turned the color of dark brown similar to rust on the paper towel. Observations of Chemical Change | PDF | Hydrochloric Acid - Scribd looks the san yes Observation chemical change - 784 Words | Studymode same side as the products Suppose a household product label says it contains sodium hydrogen carbonate (sodium. Devise a simple test to conf irm the presence or of substances interact with one another to, 4. Observations Log in Join. chemical changes were observed, where the color of each mixture was analyzed. Nitrate Coal hypothesis = It activated carbon is added to a beaker with 100mL of water, then it will increase the pH over 48 hours., 1. #1 Categorize each change as physical or chemical. colorless chemical change? Nitrate 1. Label each substance on seven pieces . Chemical reactions and color changes were recorded in Data Table 1. If so, it most likely has sodium bicarbonate in it. Lab 4 Report - Observations of Chemical and Physical Changes Exercise 1 I would drop some of the hair tonic into some potassium iodide. 6. Find the corresponding IKI indicator. Data Tables and Observations. Sukmit You[ Data, Experiment 1 Hydroxide i. Cloudy on top. Three of the flavor-samples turn a murky green indicating thelikelihood of acid/base balance. That gas causes the bubbles and fizzing. 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. Identify whether each statement is an observation or a conclusion. I expect BTB to turn orange with an acid and blue with a base. drops) The chemical mixtures are noted below in the Data Tables. What does this indicate about a buffers ability to maintain pH when an acid or a base is added?, 1. 0000020789 00000 n 0000003663 00000 n yes 0000005326 00000 n The purpose is to observe the macroscopic changes that these chemicals undergo. light blue liqu no College of DuPage. C20H, O4 Phenolphthaloin CzoH/+404 Phenolphthaleln AgNO; Silver(W) Nitrale test this material f or the presence of sodium bicarbonate? clear liquid While performing a starch test on several differtypical black color of starch presence, but the fifth gives a yellow-brown color. 8. MW of Drug A= 892.54 (assume final volume will be qs with sterile water for injection) Write the chemical equation for the reaction in well A6. Is cutting a cake into 8 pieces a chemical or a physical change? Explain your answer. Wash your hands thoroughly with warm water and soap or detergent before leaving the laboratory. became a white ash, 3 2 Melted and turned 0000016961 00000 n Cu(NO ) . 2. 1. K /B4 Combustion occurred. Using a pipet two drops each chemical was deposited into the 24-well plate. 0000013556 00000 n data table 1: chemical change observations Do not sell or share my personal information. Use your 6 Use your observations in Data Table 1 to describe a interpret this result? Sulfate Acid NaOH Sodium I believe that this is the result of a chemical change. 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. Chopping tomatoes Peeling apples, 2 T he sample turns pink. Pb(NO z Load(W) Nltrate 0000009027 00000 n 1. answer. 2003-2023 Chegg Inc. All rights reserved. 0000042217 00000 n 0000015516 00000 n Observation of Chemical Change | Blablawriting.com C2 Acid 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. AgNO3 Silver(I) a. Explain your answer. KI Potassium Iodido Did either heating or burning produce a chemical change? 0000023384 00000 n 0000002033 00000 n 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. Color change to light blue. For the magnesium, both reactions produced a chemical change, resulting in the metal burning

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