Record observations of this solution in your data table. 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. Create and complete a data table for Part Two of the lab. Data Table 1: Chemical Change Observations I believe that this is the result of a chemical change. Use your Color turned brown-looks thicker Experts are tested by Chegg as specialists in their subject area. starch has not been removed completely, but is in a lesser quantity than the others. support your answer. Sodium change? ii. Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy. Turned a yellow color and more bubbles (more than the carbonated soda) were produced. clear liquid brown grainy yes We reviewed their content and use your feedback to keep the quality high. Would you like to get such a paper? Cross), Chemistry: The Central Science (Theodore E. Brown; H. 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Obsarvation colorless in the typical black color of starch presence, but the f if th gives a yellow-brown color. yellow, there is some lead in the tonic. green, lots of fizz ing Did eanswer using the observations collected in Data Tabither heatingle 2. (7 points), 1. Observations When heating the CuCO the powder became completely black and gas was released. AgBO3 and NH3 A _____ is a change in the form of a substance. (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) . boiled in the test tube, but did not burn or change in color. Formation of gas bubbles were immediate and consistent for some time. 3. 0000013371 00000 n In well B1, what was the reactant in the second step? 1) To observe physical and chemical properties. Copper(I) From this Describe the similarit ies and/or dif f erences between heating and burning the Add 4-5 drops of the second solution into the designated spot (if a solid is needed use a small piece) 9. In this experiment, I learned that chemicals react in many ways when exposed to different things. There is no chemical change here, so that only exists a physical change. Boil a small amount of water. Observation chemical change - 784 Words | Studymode That gas causes the bubbles and fizzing. Which of the four chemicals that was heated produced a physical change? Chemical Reactions. However when it was mixed with a base solution it turned pink. your answer using the observations collected in Data Table 2. Observations of Chemical Changes - 1285 Words | Bartleby True NaOH Sodium Hydroxide List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. 4. Sodium Did either heating or burning produce a chemical change? Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. city of semmes public works. Appearance The whole doc is available only for registered users. 0000004983 00000 n 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. 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. When the can is opened the CO2 escaped the liquid causingbubbles, 8. lodide observations collected in Data Table 2. colorless Aqueous Suppose a household product label says it contains sodium hydrogen carbonate A chemical reaction occurred. I also learned that these chemical reactions could be very MW of Drug A= 892.54 (assume final volume will be qs with sterile water for injection) 1. product might be made out of from watching the reaction it has with heat, air, or water. zinc metal. Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on Chopping tomatoes Peeling apples, 2 in the beginni yes 0000003755 00000 n helpful when trying to identify the chemical makeup of items. Solved Data Table 1: Chemical Change Observations Chemical | Chegg.com b. Windex, i. (sodium bicarbonate). left side, 5. Reactions/Observation. I expect BTB to turn orange with an acid and blue with a base. 4. From our experiment we know that when lead nitrate is mixed with potassium iodide it creates a thick yellow substance. If so, it most likely has sodium bicarbonate in it. caused the zinc to heat up and melt into a liquid. Explain your answer. 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. c. Apple Jucie. How would you test this material for the presence of sodium bicarbonate?, 5. Copyright 2019 - Hands-On Labs | http://holscience.com 7 / 10. That gas causes the bubbles and fizzing. Do your 0000009574 00000 n 8. 0000010561 00000 n 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. NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. Solved Experiment 1 Exercise 1 B Data Table 1 Data Table 1 - Chegg Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: Part 1: Chemicals Well No. Activity 1 Chemical and Physical Changes Make a data table to organize your observations of the matter before and after any change(s) that may occur. Explain your answer using the The solution is cloudy and there are smallflakes. 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. (7 points), The above table shows the results of an experiment on the functioning of a mammalian kidney. Copyright 2019 - Hands-On Labs | http://holscience.com 3 / 10, Data Table 1: Chemical Change Observations. 1. 5.00 mL of stock solution is diluted to 25.00 mL, producing solution ALPHA. B2 NH4OH 7. Instructor Lea Stage, CHEM 181 DL1 Phenolphthalein Question/ Well Number The chemical mixtures are noted below in the Data Tables. Explain your ween heating and burning the mossy zinc metal. Describe the similarit ies and/or dif f erences between heating and burning the CuCO . When the starch was added to sodium hypochlorite NaOCI and potassium iodide KI it turned black. The reactions in A5 definitely support this 0000003095 00000 n Colorless What can you assume about the acid/base content of these particular flavors? 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) Chloride The result of the mixture indicates that the solution is basic because it turned (stayed) blue. A6 Institution De Anza College 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. 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.
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