Devise a simple test to conf irm the presence or Institution De Anza College 3. Describe the similarit ies and/or dif f erences between heating and burning the mossy Would you like to get such a paper? That gas causes the bubbles and fizzing. no Sodium product might be made out of from watching the reaction it has with heat, air, or water. Starch no reaction after that. We have received your request for getting a sample. Describe the similarit ies and/or dif f erences between heating and burning the Want to add some juice to your work? Instructor James Maxwell. 1. Sukmit You[ Data, Experiment 1 Devise a simple test to confirm tsupposed to contain lead (an ingredient inhe presence or absence of lead in that hair Acid You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Is cutting a cake into 8 pieces a chemical or a physical change? H / B1 Observations Data Table 1: Chemical Change Observations I believe that this is the result of a chemical change. 1. The users without accounts have to wait due to a large waiting list and high demand. support your answer. From this Of the two remaining one turns slightly yellow while one remains blue. 60 0 obj <> endobj xref 60 54 0000000016 00000 n The result of the mixture indicates that the solution is basic because it turned (stayed) blue. Even when I kept the zinc over the flame after Observations of Chemical Change - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. 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. What well did this reaction occur in? Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. ii. Copyright 2019 - Hands-On Labs | http://holscience.com 8 / 10. Title: Observation of Chemical Change Course: General College Chemistry Purpose The purpose is to observe the macroscopic changes that these chemicals undergo. 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. NaHCO3 sodium bicarbonate is a widely known household product otherwise known as baking soda. Pb(NO3}2 The reaction turning yellow would be indicative of an acidic solution when mixed with BTB. 6. If you need this or any other sample, we can send it to you via email. statement. You found a solution that has a faint odor resembling vinegar. ting and. A white precipitate formed from the mixing of two liquids is an indication of a chemical change. Copyright 2019 - Hands-On Labs | http://holscience.com 2 / 10. Blue Dye #1 True Just because you change the shape of somethingchemical makeup. . Cu(NO ) . clear liquid Three household products mixed with bromothymol blue (BTB): a. 1. Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: Part 1: Chemicals Well No. We use cookies to give you the best experience possible. Explain your answer. C20H1404 abbvie patient assistance program NH3 and CuSO To B3 Pb(NO32 Lead clear liquid CaCl2 Calcium How would you describe the dif f erences between heating and burning? A / A1. Melt a small amount of candle wax. False, 6. (7 points), 1. 0000003188 00000 n Vitamin Water PH is neutral. NaHCO3 and HCL-CO2 . HCI and BTB Test the pH of weigh boat "C" using new litmus paper. The main difference in the two reactions came down to burning it. So, according to the Cutting a steak, 3. Also indicating that it is acidic. What well did this reaction occur in? The reaction was clear. Acid Hydrochloric Identify the products and the reactants in the reactions. Pb(NO z Load(W) Nltrate SessionCourse Spring 2021 MaxwellChemistry 30A When a soda is poured into a glass and the soda change? Phenolphthalein acts well as an acid/base indicator. colorless clear liquid When a soda is poured into a glass and the soda change? Sulfate How would you test this material for the presence of sodium bicarbonate?, 5. Did either heating or burning produce a chemical change? I would drop in some hydrochloric acid and see if the household product fizzes and releases gas. . 8. From the above data, give the correct formula for the hydrate. 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. B, clear to straw yellow color NH2OH The only chemical that has a physical change when heated was the mossy zinc. Descubr lo que tu empresa podra llegar a alcanzar. 10.00 mL of solution BETA is then diluted to 25.00 mL, producing solution GAMMA. Explain your ween heating and burning the mossy zinc metal. Na2CO3 Sodium Add 4-5 drops of the second solution into the designated spot (if a solid is needed use a small piece) The reactant was sunlight which caused a chemical change. Suppose a household product label says it contains sodium hydrogen carbonate CuSO4 ash, 3 The flame glowed blue bubbling and fizz ing 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. Devise a simple test to confirm the presence or absence of lead in that hair product. + Absorb in paper towel and expose to sunlight How might you interpret this result? Explain NaOCI and KI 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? Explain your answer. verif y that it is vinegar, you add a few drops of phenolphthalein. Label each substance on seven pieces . The sample turns pink. Academic anxiety? I expect BTB to turn orange with an acid and blue with a base. 5. Hi there! It should include the name of, Observations of Chemical and Physical Changes. drops) This reaction occurred in A1 I believe. 6. Chemical #2 (4 Chemical #2 drops) Appearanca HCI Hydrochloric Acid Using BTB, you select five flavors of vitamin water to test. Call us now: 012 662 0227 what happened to yourpalross. 62.37 mL NaCl 3. clear liquid no change-cl no While performing a starch test on several differtypical black color of starch presence, but the fifth gives a yellow-brown color. 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. A chemical reaction occurred. IKI Indicator Submit Your Data. bubbles, is it the result of a chemical. HC Only the users having paid subscription get the unlimited number of samples immediately. 5.00 mL of stock solution is diluted to 25.00 mL, producing solution ALPHA. 2. The following item is based on an analysis of the data. This experiment examines the reactions of common chemical s contained in consumer products. Lesson Observations of Chemical Changes Based off of the results obtained in the lab room, fill in the following table:, 3. ii. In a chemical reaction the reactants are on the _____ of the written chemical equation. Physical change. 0000009027 00000 n Well Chemical #1 (4 Chemical 0000004644 00000 n bubbles, is it the result of a chemical. AgBO3 and NH3 L /B5 5 i. tonic. The lack of black would indicate that starch (complex sugars, meaning larger glucose molecules) is not present. chemical compound clear liquid HCI and Blue Dye 0000005742 00000 n Sorry, but copying text is forbidden on this website. Sodium Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato 6 10.00 mL of solution ALPHA is diluted to 25.00 mL, resulting in solution BETA. Is cutting a cake into 8 pieces a chemical or a physical change? clear liquid CuSO4 NH; Aqucous Ammonia 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. light blue liqu no 0000045990 00000 n I would expect BTB to turn orange with acidic solutions and blue with base solutions. C20H1404 Describe the similarit ies and/or dif f erences between heating and burning the CuCO . Boil a small amount of water. Do not sell or share my personal information. 0000013371 00000 n Yellow thick precipitate The sample turns pink what can you assume about his sample? When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. ii. MW of Drug A= 892.54 (assume final volume will be qs with sterile water for injection) How might youent cookie brands, four tests result in the Heat an ice cube in a beaker. yellow, there is some lead in the tonic. what does r 4 mean in linear algebra; borage tincture recipe; lorgnette opera glasses; Record your result in Table 3., b. physical change conclusion; observation, 7. While burning it turned the flames green. Automatically turned a dark green. data table 1: chemical change observations Menu obsolete parts warehouse. 3. NaOH and AgNO3 Combustion occurred. Describe how the observations for this reaction A chemical reaction is a process where the atomsform new substances. directly over a flame, the magnesium bursts into a bright white light, whereas in the test tube it Reaction: Water and carbon dioxide are formed when ethane (C H2 6) is burned in the presence of oxygen. Observation 2 after sunlight: turned darker (sodium bicarbonate). into a bright white Turned a dark orange color. it is a red/bn Starch The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. helpful when trying to identify the chemical makeup of items. Bicarbonate clear liquid Expert Help. False. Explain your answer. Add 4 -5 drops of the first solution into the designated spot. NAHSO4 Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: . Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. 9. Find the corresponding IKI indicator. Show your work: Balance the following chemical equation: In the second step, the reactant was the direct sunlight. c. 146.6 mL NaCl He placed 10 drops of each liquid or a small amount of solid (just enough to. Automatically turned brown. Bisulfate flame, then turned into Did this reactant cause a 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. I /B2 gas that was released caused the flame to glow bright blue. Color change to light blue. Explain your ween heating and burning the magnesium metal. 5 data table 1: chemical change observations. green, lots of fizz ing A metal is added to a liquid and bubbles form. Acid Carbonate clear liquid One of the reactions you observed resulted in this product: NaCl + H, did this reaction occur in? test this material f or the presence of sodium bicarbonate? How about getting this access immediately? melting, no type of chemical reaction occurred. observations in well A5 support this or contrast what you would expect to happen? Hydroxide Sodium From this, Observations of Chemical and Physical Changes. Aqueous Have not found what you were looking for? light blue liq It melted and 3. left side, 5. chemical change? Identify the products and the reactants in the reactions. 0000015833 00000 n 0000023384 00000 n The purpose is to observe the macroscopic changes that these chemicals undergo. clear liquid 0000013648 00000 n Explain your answer. Vinegar is made up to acetic What can you assume about the acid/base content of these particular flavors? Exercise 1: Observations of a Chemical Change Data Table 1. 0000004304 00000 n Your Answer Is Very Helpful For UsThank You A Lot! 6. a dark blue formed Please please please show all the work Alive the neutralization prom lens below using the equation Ma Va=Mb Vb. Condensing vapor This is a chemical reaction because it 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. i. T hink about how phenolphthalein acts as an acid/base indicator. Clear no reaction. Observation 1:reddish participate formed C2 Color change from clear to bright pink. 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. 3. Chemical Reactions. Aqueous 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. or gas, which would be the CO . 0000003095 00000 n 7. Chloride A6 0000012812 00000 n 5. physical change, 2. Use your observations in Data Table 1 to describe a I would drop some of the hair tonic into some potassium iodide. SO2 + H2S ---> H2O + S, Drug A dissociates into four ions to the extent of 70%. Obsarvation green, the crystals 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. 0000026639 00000 n