Hydrochloric Copyright 2019 - Hands-On Labs | http://holscience.com 7 / 10. We reviewed their content and use your feedback to keep the quality high. J /B3 9. Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. appened, and a(n) _____ is a description of, observation; conclusion Find the corresponding NaOH indicator. Is cutting a cake into 8 pieces a chemical or a physical change? Looked thicker than other liquids. CaCl2 Calcium NAHSO4 Hydrochloric NaHCO3 and HCL-CO2 A chemical reaction is a process where the atomsform new substances. 9. HC Experts are tested by Chegg as specialists in their subject area. 4. 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. I would believe that the substance is actually sodium hydroxide. 1) To observe physical and chemical properties. Chemical #2 (4 Chemical #2 drops) Appearanca HCI Hydrochloric Acid A1 NaHCO drops) clear liquid Cutting a steak, 3. Do not sell or share my personal information. When a soda is poured into a glass and the soda bubbles, is it the result of a chemical When the can is opened the CO2 escaped the liquid causingbubbles, 8. immediate ch yes magnesium metal. Descubr lo que tu empresa podra llegar a alcanzar. coloreless Separates to edges leaving hole in the middle. 7. Course CHEM 181 DL1 0000005742 00000 n Did either heating or burning produce a chemical change? Observations of Chemical Changes - 1103 Words | Studymode Solved Data Table 1: Chemical Change Observations Chemical | Chegg.com 0000012940 00000 n Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato 3. Lab4;Template Physical and Chemical Changes_Adams.docx Chemical reactions and color changes were recorded in Data Table 1. The sample turns pink what can you assume about his sample? Color turned brown-looks thicker Lead() Nitrate PDF Activity 1 Chemical and Physical Changes - Woodstown left side, 5. Color was almost Identical to BTB, dark blue. A(n) _____ is the explanation of why something hwhat happened. Using BTB, you select five flavors of vitamin water to test. Add 4 -5 drops of the first solution into the designated spot. That was the only reaction that caused any type of fizzing The purpose of this experiment is for the student to gain knowledge and experience regarding how avariety of chemicals react to one another. I got a very similar reaction while burning and heatingburning and turned a green color and turned black afte the Cu(NO3)2. Solved Experiment 1 Exercise 1 B Data Table 1 Data Table 1 - Chegg I would assume that the fifth cookie does not have as much starch as the other cookies. 2. The purpose is to observe the macroscopic changes that these chemicals undergo. absence of lead in that hair tonic. Explain your answer. The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. Did either heating or burning produce a chemical change? 62.37 mL NaCl H / B1 Labpaq lab 1: Observation of chemical change lab report . chemical compound Instructor Lea Stage, CHEM 181 DL1 Vinegar is made up to acetic Explain your answer./base indicator. Copper(II) (7 points), 1. Hi there! Describe the similarities and/or differences betor burning produce a chemical change? clear liquid CuSO4 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. NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. 4. 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 the starch was added to sodium hypochlorite NaOCI and potassium iodide KI it turned black. NH3 and CuSO ting and. It seems that when phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. From this result, can you assume this sample is indeed vinegar or contains some Label each substance on seven pieces . Three of the flavor-samples turn a murky green indicating thelikelihood of acid/base balance. d. 218.33 mL NaCl. L /B5 Color change to light blue. white powder 0000020789 00000 n Copyright 2019 - Hands-On Labs | http://holscience.com 8 / 10. . turned black, Glowed red, then turned A metal is added to a liquid and bubbles form. Data Table 1: Chemical Change Observations. 1. test this material f or the presence of sodium bicarbonate? 10.00 mL of solution BETA is then diluted to 25.00 mL, producing solution GAMMA. trailer <<1F743DE7EAF4484B866163DC32EB514E>]>> startxref 0 %%EOF 113 0 obj <>stream 0000013648 00000 n clear liquid 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. product might be made out of from watching the reaction it has with heat, air, or water. The heating and burning of Cu(NO ) was exactly the same, other than the addition of the glowing In a chemical reaction the reactants are on the _____ of the written chemical equation. Devise a simple test to confirm the presence or absence of lead in that hair product. white powder Describe the similarit ies and/or dif f erences between heating and burning the CuCO . Sodium Did either heawer using the observations collected in Data Table 3 2 ting or2. Easier to see under black paper. In our prior experiments when phenolphthalein was added to a solution that was acidic it had no reaction, it stayed clear. Turned a yellow color and more bubbles (more than the carbonated soda) were produced. clear liquid data table 1: chemical change observations. your answer with observations made and recorded in Data Table 2. When burning the chemical, the powder still turned black but (I assume) the Write the chemical equation for the reaction in well A6. caused the zinc to heat up and melt into a liquid. d. Clementine Izzy How might youent cookie brands, four tests result in the conclusion; observation, 7. A physical change occurred. How about getting a customized one? Copyright 2019 - Hands-On Labs | http://holscience.com 2 / 10. Bright purple in color In this experiment, I learned that chemicals react in many ways when exposed to different things. Have not found what you were looking for? Copyright 2019 - Hands-On Labs | http://holscience.com 4 / 10, Copyright 2019 - Hands-On Labs | http://holscience.com 5 / 10. xH20 + crucible - 17.4960gmass of AB + crucible - 15.1314gCalculate the % water content of the hydrate3. B1 AgNO3 Silver NaHCO3 sodium bicarbonate is a widely known household product otherwise known as baking soda. There was + Absorb in paper towel and expose to sunlight. Chloride Did this reactant cause a The chemical mixtures are noted below in the Data Tables. I did not observe any differences between the heating and burning of the zinc. Lesson Observations of Chemical Changes 6. 0000004983 00000 n Observation of Chemical Change | Blablawriting.com 0000020326 00000 n When a soda is poured into a glass and the soda change? 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. C1 was sodium hypochloriteand potassium. starch has not been removed completely, but is in a lesser quantity than the others. Explain your answer using your results f rom Data Table 1. Physical change. Devise a simple test to confirm tsupposed to contain lead (an ingredient inhe presence or absence of lead in that hair Record your result in Table 3., b. How would you test this material for the presence of sodium bicarbonate?, 5. The reaction turning yellow would be indicative of an acidic solution when mixed with BTB. That gas causes the bubbles and fizzing. light blue liq NAHCO3 Cloudy on top. light blue liqu no Institution De Anza College Write the chemical equation for the reaction in well A6. 155.9 ml NaCl Is cutting a cake into 8 pieces a chemical or a physical change? Alive the neutralization prom lens below using the equation Ma Va=Mb Vb. 7. What might be concluded? it is a red/bn Starch 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 . chemical reaction IKI Indicator The reactant was sunlight which caused a chemical change. Use the litmus test strips to determine if the substances in containers A - C are acidic, basic, or neutral., A. 0000008196 00000 n This experiment examines the reactions of common chemical s contained in consumer products. The color was more pronounced under the white piece of paper. Ammonia Chemical change. A6 Blue Dye #1 Data Table 1 This is a chemical reaction because it SessionCourse Spring 2021 MaxwellChemistry 30A Also indicating that it is acidic. 3. Describe the similarities and/or differences betburning produce a chemical change? By clicking "SEND", you agree to our terms of service and privacy policy. Nitrate Copper(I) When heating the CuCO the powder became completely black and gas was released. i. turned the color of dark brown similar to rust on the paper towel. Jump the queue with a membership plan, get unlimited samples and plagiarism results immediately! Physical education observation report Essay Example | GraduateWay HCI and phenolphthalein When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. Na cO3 Sodium does not mean youchanged the. 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? Observation of chemical change LabPaq - New York Essays in the beginni yes Answered: clear liquid CuSO4 Copper(I) B2 NH4OH | bartleby SO2 + H2S ---> H2O + S, Drug A dissociates into four ions to the extent of 70%. Nitrate KI Potassium Iodido b. 1. Copying is only available for logged-in users, If you need this sample for free, we can send it to you via email. Chemical #2 (4 Heat an ice cube in a beaker. tonic. chemical is bubbled and yes Using a pipet two drops each chemical was deposited into the 24-well plate. c. Apple Jucie. Reactions/Observation. 0000154339 00000 n K /B4 Color change to a glossy yellow from clear. 0000005326 00000 n 0000003663 00000 n drops) Nitrate turned to a w yes Ammonia The users without accounts have to wait due to a large waiting list and high demand. Heating chemicals is defined by the process of combustion. air while being poured into the glass, a gas is released. 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) Devise a simple test to conf irm the presence or KI and Pb(NO3) Even when I kept the zinc over the flame after 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. Bisulfate Student NameStudent ID yumeng zhang 164162 and turning to ash. The sample turns pink. 0000003188 00000 n Data Table 1: Chemical Change Observations, Chemical change. If not it is safe to say that there is no lead in the product. flame, then turned into Observation of Physical and Chemical Changes, Exercise 1: Observations of a Chemical Change. You are verifying that is indeed vinegar and you add a few drops of phenolphthalein. state of matter. helpful when trying to identify the chemical makeup of items. your answer using the observations collected in Data Table 2. Sodium hydroxide is a base and hydrochloric acid is an acid. 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. When the can is opened the CO2 escaped the liquid causingbubbles. This would indicate that it is acidic. You have read that a new brand of hair tonic is Grecian Formula ). Apple slices turning brown in the air. How might you interpret this result? yes 0000016961 00000 n 0000006566 00000 n A white precipitate formed from the mixing of two liquids is an indication of a chemical change. Phenolphthalein acts well as an acid/base indicator. 0000001895 00000 n 0000013464 00000 n Observations Chemical into a bright white Describe the similarit ies and/or dif f erences between heating and burning the mossy 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. Get original paper in 3 hours and nail the task . A _____ is a change in the form of a substance. 1. Cooking an egg 0000037522 00000 n colorless The main objectives . NH; Aqucous Ammonia clear liquid NaOH: NaOH, Educator app for While the data sources included here represent a non-exhaustive list of those . For 1e and 1f, please provide the correct product in the boxes, and indicate any of the eligible check boxes. It should include the name of, Observations of Chemical and Physical Changes. Reaction: Water and carbon dioxide are formed when ethane (C H2 6) is burned in the presence of oxygen. Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). Describe the similarit ies and/or dif f erences between heating and burning the 8. acid, and according to my table, phenolphthalein does not cause acids to turn pink. Observation 2: Log in Join. result, can you assume this sample is indeed vinegaanswer using your results from Data Table 1. r or contains some vinegar? 0000002819 00000 n To colorless vinegar? We use cookies to give you the best experience possible. You found a sample of a solution that has a f aint odor resembling vinegar (an acid). 0000010561 00000 n boiled in the test tube, but did not burn or change in color. NaOH Sodium Hydroxide The chemical mixtures are noted below in the Data Tables. became a white ash, 3 2 Melted and turned I /B2 Automatically turned a dark green. From this, Observations of Chemical and Physical Changes. Bisulfate HCI and BTB turned into al yes change? After exposure to bright light from my light bulb it turned a dark brown. c. 146.6 mL NaCl no reaction after that. With a. brown color separated and created chunks. A chemical reaction occurred. Pb(NO z Load(W) Nltrate The blue crystals melted during both hear a while. 2003-2023 Chegg Inc. All rights reserved. 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. The reaction was clear. Show your work: Balance the following chemical equation: Well Chemical #1 (4 Chemical HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate Chemicals Formation of gas bubbles were immediate and consistent for some time. NaOH and AgNO3 Observations of Chemical Changes - 1285 Words | Bartleby AgNO3 Silver(I) Lesson Observations of Chemical Changes

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