#2 black, 3 2 The flame glowed 0000023384 00000 n just glowed red and turned into ashes. Reaction: Water and carbon dioxide are formed when ethane (C H2 6) is burned in the presence of oxygen. Chemical Reactions. NaHCO3 and HCL-CO2 I believe that this is the result of a chemical change. Sodium Did either heating or burning produce a chemical change? Chemical Also indicating that it is acidic. 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 caused the zinc to heat up and melt into a liquid. 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 . no light blue liq NAHCO3 When the can is opened the CO2 escaped the liquid causingbubbles. Hydroxide 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. 9. Heat an ice cube in a beaker. 2003-2023 Chegg Inc. All rights reserved. NH3 and CuSO air while being poured into the glass, a gas is released. A6 Appearance 0000002911 00000 n T hink about how phenolphthalein acts as an acid/base indicator. Data Tables and Observations. 0000002819 00000 n black, Copyright 2019 - Hands-On Labs | http://holscience.com 10 / 10, CHEM181DL1_ObservationsofChemicalChanges_48408.pdf. We are really sorry but we cannot send the sample immediately. Chemical #2 (4 Chemical #2 drops) Appearanca HCI Hydrochloric Acid Describe how the observations for this reaction support your answer. Using a pipet two drops each chemical was deposited into the 24-well plate. Is cutting a cake into 8 pieces a chemical or a physical change? right side NH2OH 0000004644 00000 n Question/ Well Number C20H, O4 Phenolphthaloin CzoH/+404 Phenolphthaleln AgNO; Silver(W) Nitrale clear liquid I would drop in some hydrochloric acid and see if the household product fizzes and releases gas. Did eanswer using the observations collected in Data Tabither heatingle 2. Sulfate The reaction was clear. 1. Melt a small amount of candle wax. Nitrate You found a solution that has a faint odor resembling vinegar. The reaction was a misty blue color. turned to a w yes in the beginni yes Did either heawer using the observations collected in Data Table 3 2 ting or2. chemical change? posit ive result f or this test. 8. Cloudy on top. 3. 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. what does r 4 mean in linear algebra; borage tincture recipe; lorgnette opera glasses; How might youent cookie brands, four tests result in the Lead() Nitrate This experiment examines the reactions of common chemical s contained in consumer products. To verifythalein. Bicarbonate white powder Fill in the table below with the results from the monosaccharide test experiment, and your conclusions based on those results., 9. tonic. bubbling and fizz ing 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. The sample turns pink. Chemical #2 (4 + Absorb in paper towel and expose to sunlight. Other than some bubbles produced there was no significant changes occurred when BTB was added. Identify the chemical in the table. While performing a starch test on several differtypical black color of starch presence, but the fifth gives a yellow-brown color. It melted and b. Windex, i. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Data Table 1 7. Color change to light blue. Question/ Well Number Chemicals Reactions/Observation. Physical change. Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: . You can learn exactly what a When the chemicals in the soda mix with the Observation of Physical and Chemical Changes, Exercise 1: Observations of a Chemical Change. Explain your answer. False. Data Table 1: Chemical Change Observations. magnesium metal. Explain your, From the experiment I just preformed I would say there iodide present, but no starch. First week only $4.99! Copyright 2019 - Hands-On Labs | http://holscience.com 7 / 10. Institution De Anza College It seems that when phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. Looked thicker than other liquids. The reactant was sunlight which caused a chemical change. Record observations of this solution in your data table. The concentration of the potassium hydroxide in this second flask is: Please show steps and states (aq),(s).. etc thank you. Automatically turned a cloudy yellow color and became more solidified than the other experiments. Heating chemicals is defined by the process of combustion. 0000003479 00000 n Find the corresponding NaOH indicator. Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. 0000003663 00000 n Copyright 2019 - Hands-On Labs | http://holscience.com 3 / 10, Data Table 1: Chemical Change Observations. Hydrochloric Burning paper 0000026639 00000 n The reactions in A5 definitely support this NaOH: NaOH, Educator app for product might be made out of from watching the reaction it has with heat, air, or water. Physical observations can be used to determine if a chemical change has occurred. c. Apple Jucie. The sample turns pink. statement. clear liquid In well B1, what was the reactant in the second change? Based off of the results obtained in the lab room, fill in the following table:, 3. left side, 5. List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. Use your 5. it is a red/bn Starch 0000003003 00000 n The chemical mixtures are noted below in the Data Tables. How would you describe the dif f erences between heating and burning? Observations of Chemical Changes. Add 4-5 drops of the second solution into the designated spot (if a solid is needed use a small piece) Chemical Change E (YiN) starch has not been removed completely, but is in a lesser quantity than the others. 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). I /B2 24 Hour Services - Have an emergency? Label each substance on seven pieces . was sodium hypochloriteand potassium. Instructor James Maxwell. Data Table 1: Chemical Change Observations. 0000020326 00000 n 1. NaOH Sodium colorless 0000016961 00000 n However when it was mixed with a base solution it turned pink. Instructor Lea Stage, CHEM 181 DL1 verif y that it is vinegar, you add a few drops of phenolphthalein. Have not found what you were looking for? does not mean youchanged the. Color change from clear to bright pink. colorless chemical change Lesson Observations of Chemical Changes C20H1404 He placed 10 drops of each liquid or a small amount of solid (just enough to. IKI indicator 0000005326 00000 n 9. 0000002525 00000 n a. Do your gas that was released caused the flame to glow bright blue. 6. 0000002652 00000 n The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. Acid True clear liquid Observation Of the two remaining one turns slightly yellow while one remains blue. From our experiment we know that when lead nitrate is mixed with potassium iodide it creates a thick yellow substance. 0000012812 00000 n observations collected in Data Table 2. Which of the four chemicals that was heated produced a physical change? Cooking an egg While burning it turned the flames green. + Absorb in paper towel and expose to sunlight Observation 2: No color change, One of the reactions you observed resulted in these products: NaCl + H O + CO (g)? 4. Experts are tested by Chegg as specialists in their subject area. Wash your hands thoroughly with warm water and soap or detergent before leaving the laboratory. clear liquid ingredient in Grecian Formula ). College of DuPage. I expect BTB to turn orange with an acid and blue with a base. chemical is When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. _____ magnesium generates a very bright light. Hydrochloric Explain your answer using your results f rom Data Table 1. Get a custom sample essay written according to your requirements urgent 3h delivery guaranteed. 8. Boiling water ii. clear liquid + Absorb in paper towel and expose to sunlight False, 10. 0000009574 00000 n 10.00 mL of solution ALPHA is diluted to 25.00 mL, resulting in solution BETA. How might you interpret this result? A white precipitate formed from the mixing of two liquids is an indication of a chemical change. xH20 + crucible - 17.4960gmass of AB + crucible - 15.1314gCalculate the % water content of the hydrate3. Explain your answer. ii. Colorless Boil a small amount of water. clear liquid Your Answer Is Very Helpful For UsThank You A Lot! The only chemical that has a physical change when heated was the mossy zinc. Pb(NO3}2 no reaction after that. 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. Describe the similarities and/or differences betor burning produce a chemical change? bubbles, is it the result of a chemical. clear liquid immediately t yes When, 10. absence of lead in that hair tonic. If so, it most likely has sodium bicarbonate in it. clear liquid Explain your ween heating and burning the magnesium metal. Color turned brown-looks thicker Did either heating or burning produce a chemical change? Whatbservations for this reaction support your Apple slices turning brown in the air. The reaction turning yellow would be indicative of an acidic solution when mixed with BTB. Use your observations to support your answestep? Sodium Automatically turned a bright pink. 0000006566 00000 n Cu(NO ) . bubbled and turned Or if you need this sample for free, we can send it to you via email. Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. When the starch was added to sodium hypochlorite NaOCI and potassium iodide KI it turned black. In a chemical reaction the reactants are on the _____ of the written chemical equation. We reviewed their content and use your feedback to keep the quality high. 0000029863 00000 n Study Resources. Blue Dye and NaOCI A chemical change may also be referred to as a _____. From this, Observations of Chemical and Physical Changes. Copyright 2019 - Hands-On Labs | http://holscience.com 1 / 10, Student ID 48408 What well did this reaction occur in? Suppose a household product label says it contains sodium hydrogen carbonate Explain your answer. Copyright 2019 - Hands-On Labs | http://holscience.com 4 / 10, Copyright 2019 - Hands-On Labs | http://holscience.com 5 / 10. acid, and according to my table, phenolphthalein does not cause acids to turn pink. 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. There is no chemical change here, so that only exists a physical change. HCI and BTB material for the presence of sodium bicarbonate? Blablawriting.com provide for you a wide variety of top-notch essay and term paper samples on any possible topics absolutely. Suppose a household product label says it contains sodium hydrogen carbonate (sodium. NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. became a da yes Appearance iPad. If not it is safe to say that there is no lead in the product. Observation 2 after sunlight: turned darker d. 218.33 mL NaCl. Log in Join. Would you like to get such a paper? trailer <<1F743DE7EAF4484B866163DC32EB514E>]>> startxref 0 %%EOF 113 0 obj <>stream part c and d? Only the users having paid subscription get the unlimited number of samples immediately. Get access to our huge, continuously updated knowledge base. and gas released, then 0000154339 00000 n I then tested this on household items such as corn and pretzels to determine their chemical properties. List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. AgNO3 (aq) + NaOH (aq) ------> AgOH (s) + NaNO3 (aq). 0000003755 00000 n Aqueous Vinegar is made up to acetic chemical is bubbled and yes Start your trial now! 0000003095 00000 n abbvie patient assistance program 10.00 mL of solution BETA is then diluted to 25.00 mL, producing solution GAMMA. Bisulfate Sukmit You[ Data, Experiment 1 CaCl2 Calcium 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. Sulfate Explain your answer. 50.00 cm3 of a 1.5784 mol.dm-3 solution of potassium hydroxide is transferred to an empty 700.00 cm3 volumetric flask. 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. Test the pH of weigh boat "C" using new litmus paper. Lesson Observations of Chemical Changes 9. Observation 2: You have read that a new brand of hair tonic is supposed to contain lead (an 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. Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). 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. HCI and phenolphthalein So, according to the Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: Part 1: Chemicals Well No. 3. Institution Ocean County College To verify, that it is vinegar, you add a few drops of phenolphthalein. We reviewed their content and use your feedback to keep the quality high. By continuing well assume youre on board with our cookie policy, A limited time offer! 7. Explain your answer. When a soda is poured into a glass and the soda bubbles, is it the result of a chemical 1) To observe physical and chemical properties. 8. conclusion; observation, 7. Using your results f rom Data Table 1 as a guide, how would you Submit Your Data. From this result, can you assume this sample is indeed vinegar or contains some 3. 1. A physical change occurred. Phenolphthalein acts well as an acid/base indicator. IKI Indicator Reaction Copyright 2019 - Hands-On Labs | http://holscience.com 2 / 10. 0000020789 00000 n There was flame when heated. Write the chemical equation for the reaction in well A6. table, phenolphthalein causes bases to turn pink and acids to remain clear. 2. looks the san yes From the above data, give the correct formula for the hydrate. A(n) _____ is the explanation of why something hwhat happened. 6. Carbonate J /B3 NH; Aqucous Ammonia NaOH and phenolphthalein 5 ii. Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on When heating the CuCO the powder became completely black and gas was released. 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. white powder 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. . data table 1: chemical change observations. 1. What well did this reaction occur in? Thank you! Identify the products and the reactants in the reactions. Did either heating or burning produce a chemical change? B3 Pb(NO32 Lead clear liquid CaCl2 Calcium ash, 3 The flame glowed blue In our prior experiments when phenolphthalein was added to a solution that was acidic it had no reaction, it stayed clear. Did either heating or burning produce a chemical change?

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