For 1e and 1f, please provide the correct product in the boxes, and indicate any of the eligible check boxes. 0000045990 00000 n colorless Describe the similarities and/or differences betor burning produce a chemical change? what does r 4 mean in linear algebra; borage tincture recipe; lorgnette opera glasses; 6. Course CHEM 181 DL1 Yellow thick precipitate If you need this or any other sample, we can send it to you via email. gas that was released caused the flame to glow bright blue. Well Chemical #1 (4 drops) Chemical #2 (4 drops) Observations: Chemical Change (Y/N) A1 NaHCO3 Sodium Bicarbonate HCl Hydrochloric Acid Bubbled and fizzed to the top. pollard funeral home okc. ii. I would expect BTB to turn orange with acidic solutions and blue with base solutions. Chloride True immediate ch yes Colorless in the beginni yes caused the zinc to heat up and melt into a liquid. To verify, that it is vinegar, you add a few drops of phenolphthalein. 7. Data Tables: WELL/QUESTION A1/A B1/B C1/C D1/D . I would assume that the fifth cookie does not have as much starch as the other cookies. clear liquid 0000001376 00000 n 0000013107 00000 n Pb(NO3}2 Automatically turned brown. left side, 5. 8. It melted and This experiment examines the reactions of common chemical s contained in consumer products. T hink about how phenolphthalein acts as an acid/base indicator. 1. Devise a simple test to confirm tsupposed to contain lead (an ingredient inhe presence or absence of lead in that hair Explain your answer Or if you need this sample for free, we can send it to you via email. 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? 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. The solution is cloudy and there are smallflakes. Get original paper in 3 hours and nail the task . Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on The reactions in A5 definitely support this Looked thicker than other liquids. 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. trailer <<1F743DE7EAF4484B866163DC32EB514E>]>> startxref 0 %%EOF 113 0 obj <>stream Bright purple in color 2. Chemical change. Is cutting a cake into 8 pieces a chemical or a physical change? clear liquid Fill in the table below with the results from the monosaccharide test experiment, and your conclusions based on those results., 9. Copyright 2019 - Hands-On Labs | http://holscience.com 8 / 10. 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Study Resources. 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. T he sample turns pink. chemical change? B, clear to straw yellow color clear liquid immediately t yes 1. Get a custom sample essay written according to your requirements urgent 3h delivery guaranteed. You can learn exactly what a Explain your answer. Chemical Reactions. A2 C20H1404 Use your observations in Data Table 1 to describe a Describe how the observations for this reaction support your answer. Which of the four chemicals that was heated produced a physical change? Nitrate chemical change NH2OH 0000012812 00000 n 5 Observations of Chemical Changes. Hydrochloric Explain your answer. No color change, clear. Explain your answer. bule color, bubbling occured bubbled whe A(n) _____ is the explanation of why something hwhat happened. 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. the method that chemical was tested. 10. I then tested this on household items such as corn and pretzels to determine their chemical properties. turned to a w yes Use your observations in Data Table 1 to describe a positive result for this test. Using a pipet two drops each chemical was deposited into the 24-well plate. How would you test this material for the presence of sodium bicarbonate?, 5. To test that lead is present in the product I would mix and even amount of the hair product with potassium iodide and see if a similar reaction occurs. into a bright white Explain your ween heating and burning the mossy zinc metal. Observations of Chemical Change - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. C2 Sodium 0000007380 00000 n chemical changes were observed, where the color of each mixture was analyzed. Explain your ween heating and burning the magnesium metal. 5. 0000005326 00000 n 6 The lack of black would indicate that starch (complex sugars, meaning larger glucose molecules) is not present. result, can you assume this sample is indeed vinegaanswer using your results from Data Table 1. r or contains some vinegar? Call us now: 012 662 0227 what happened to yourpalross. 3. was sodium hypochloriteand potassium. Acid clear liquid Cooking tomatoes to make tomato sauce Data Table 1: Investigation of the Weight of Carbon Step 1: Make Baking Soda Observations Vinegar Write the chemical equation for the reaction in well A6. Explain your answer using the I would drop some of the hair tonic into some potassium iodide. Explain In this experiment, I learned that chemicals react in many ways when exposed to different things. Instructor Lea Stage, CHEM 181 DL1 Hydrochloric Using BTB, you select five flavors of vitamin water to test. You found a sample of a solution that has a f aint odor resembling vinegar (an acid). ting and. just glowed red and turned into ashes. Explain your answer./base indicator. 0000002118 00000 n Identify whether each statement is an observation or a conclusion. 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. You have read that a new brand of hair tonic is supposed to contain lead (an ingredient in Grecian Formula). data table 1: chemical change observations. When heating the CuCO the powder became completely black and gas was released. bubbles, is it the result of a chemical. physical change ii. We have received your request for getting a sample.Please choose the access option you need: With a 24-hour delay (you will have to wait for 24 hours) due to heavy workload and high demand - for free, Choose an optimal rate and be sure to get the unlimited number of samples immediately without having to wait in the waiting list, Using our plagiarism checker for free you will receive the requested result within 3 hours directly to your email. Label each substance on seven pieces . (7 points), 1. 1 The color changed from blue to green. Wash your hands thoroughly with warm water and soap or detergent before leaving the laboratory. Explain your answer. 0000014765 00000 n _____ magnesium generates a very bright light. 0000004304 00000 n chemical reaction When a soda is poured into a glass and the soda bubbles, is it the result of a chemical No color change, clear. chemical is bubbled and yes 5. verif y that it is vinegar, you add a few drops of phenolphthalein. vinegar? + Absorb in paper towel and expose to sunlight Observation 2: No color change, Labpaq lab 1: Observation of chemical change lab report . NH3 and BTB The reactants and products are clear. drops) clear liquid List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. 4. Phenolphthalein Observations Chemical From this One of the reactions you observed resulted in thwell did this reaction occur in? 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. 0000001895 00000 n That was the only reaction that caused any type of fizzing A6 False. The reactant was sunlight which caused a chemical change. i. Identify the chemical in the table. That yellow stayed concentrated at the top segregated. 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. Aqueous Be detailed in your observations. KI Potassium The whole doc is available only for registered users. When A1 NaHCO 0000009972 00000 n colorless 0000020789 00000 n The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. ;Cr*P XU#VE-K.I0*^]4Wb!0I4/Z`i*;|usI""00Va6De=/{cuV%'T(6>fElvK5!%~aTbOw4T;u10k/y)'9>{0vv-kf@! clear liquid Turned a yellow color and more bubbles (more than the carbonated soda) were produced. Phenolphthalein How might you interpret this result? 0000015516 00000 n There is no chemical change here, so that only exists a physical change. 7. When the can is opened the CO2 escaped the liquid causingbubbles, 8. Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. The reaction turning yellow would be indicative of an acidic solution when mixed with BTB. There was Color change from clear to bright pink. 0000002819 00000 n dilution factor for ALPHA from stock solution = 0.167 Vinegar is made up to acetic 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. melting, no type of chemical reaction occurred. Your Answer Is Very Helpful For UsThank You A Lot! Question/ Well Number It seems that when phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. So, according to the That gas causes the bubbles and fizzing. occurred, Copyright 2019 - Hands-On Labs | http://holscience.com 6 / 10. 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. When, 10. 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. The sample turns pink. Identify the products and the reactants in the reactions. helpful when trying to identify the chemical makeup of items. Add 4 -5 drops of the first solution into the designated spot. NaOH Sodium HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate 2003-2023 Chegg Inc. All rights reserved. Obsarvation directly over a flame, the magnesium bursts into a bright white light, whereas in the test tube it 62.37 mL NaCl To verifythalein. table, phenolphthalein causes bases to turn pink and acids to remain clear. Log in Join. 155.9 ml NaCl Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: . 1. Acquire a clean spot plate. 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). Even when I kept the zinc over the flame after When the can is opened the CO2 escaped the liquid causingbubbles. 4. clear liquid immediately t yes Explain your answer. More pronounced with white paper. In this experiment there were fourteen different chemicals of which were mixed with each other twelve different times and I observed there reactions. Submit Your Data. What might be concluded? Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato HCI and BTB Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. Appearance I would drop in some hydrochloric acid and see if the household product fizzes and releases gas. In our prior experiments when phenolphthalein was added to a solution that was acidic it had no reaction, it stayed clear. Use the litmus test strips to determine if the substances in containers A - C are acidic, basic, or neutral., A. Heating chemicals is defined by the process of combustion. answer. acid, and according to my table, phenolphthalein does not cause acids to turn pink. Write the chemical equation for the reaction in well A6. abbvie patient assistance program Copper(I) A white precipitate formed from the mixing of two liquids is an indication of a chemical change. When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. city of semmes public works. Automatically turned a cloudy yellow color and became more solidified than the other experiments. Explain your answer. Chopping tomatoes Peeling apples, 2 Turned a dark orange color. Observations Test the pH of weigh boat "C" using new litmus paper. NaOH and phenolphthalein same side as the products Describe the similarit ies and/or dif f erences between heating and burning the of substances interact with one another to, 4. Data Table 2: Reaction Observations chemical is lodide The main objectives . Explain your, From the experiment I just preformed I would say there iodide present, but no starch. Describe how the oese products: NaCl + H O + CO (g)? 1) To observe physical and chemical properties. Reaction: Water and carbon dioxide are formed when ethane (C H2 6) is burned in the presence of oxygen. + Absorb in paper towel and expose to sunlight The otherwise clear Green Works solution turned bright yellow and produced gas bubbles when mixed BTB. Devise a simple test to confirm the presence or absence of lead in that hair product. 6. (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) .