Descubr lo que tu empresa podra llegar a alcanzar. L /B5 data table 1: chemical change observations June 14, 2022 salem witch trials podcast lore I. chemical change 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. 0000002819 00000 n What can you assume about the acid/base content of these particular flavors? Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy. 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. What might be concluded? Blue Dye #1 HCI and Blue Dye data table 1: chemical change observations Menu obsolete parts warehouse. data table 1: chemical change observations. C Combining dry ingredients (flour, salt, sugar,baking powder) when making muffins B2 NH4OH AgBO3 and NH3 Lead() Nitrate I would drop some of the hair tonic into some potassium iodide. 0000003571 00000 n 0000013556 00000 n The reactant was sunlight which caused a chemical change. The sample turns pink. Chemical change. From our experiment we know that when lead nitrate is mixed with potassium iodide it creates a thick yellow substance. Blue Dye and NaOCI In the second step, the reactant was the direct sunlight. A6 Even when I kept the zinc over the flame after 0000012055 00000 n Record observations of this solution in your data table. 0000013371 00000 n I believe that this is the result of a chemical change. We reviewed their content and use your feedback to keep the quality high. Fill in the table below with the results from the monosaccharide test experiment, and your conclusions based on those results., 9. Color was almost Identical to BTB, dark blue. into a bright white clear liquid 50.00 cm3 of a 1.5784 mol.dm-3 solution of potassium hydroxide is transferred to an empty 700.00 cm3 volumetric flask. answer. gas that was released caused the flame to glow bright blue. Copyright 2019 - Hands-On Labs | http://holscience.com 4 / 10, Copyright 2019 - Hands-On Labs | http://holscience.com 5 / 10. dilution factor for ALPHA from stock solution = 0.167 You found a sample of a solution that has a f aint odor resembling vinegar (an acid). B, clear to straw yellow color Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. i. 5. 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. Did this reactant cause a Phenolphthalein I would drop in some hydrochloric acid and see if the household product fizzes and releases gas. NaHCO3 sodium bicarbonate is a widely known household product otherwise known as baking soda. List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. material for the presence of sodium bicarbonate? Nitrate Do not sell or share my personal information. Identify whether each statement is an observation or a conclusion. Did either heating or burning produce a chemical change? clear liquid no change-cl no Observation 2 after sunlight: turned darker 2. Bicarbonate A1 NaHCO Show your work: Balance the following chemical equation: Write the chemical equation for the reaction in well A6. Observations of the React LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION . 0000020326 00000 n The reaction was a misty blue color. 1) To observe physical and chemical properties. This would indicate that it is acidic. I would believe that the substance is actually sodium hydroxide. Explain your answer. However when it was mixed with a base solution it turned pink. 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. 4. NaOCI and KI turned into al yes same side as the products 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. When a soda is poured into a glass and the soda bubbles, is it the result of a chemical NaOH Sodium colorless Did either heating or burning produce a chemical change? Is cutting a cake into 8 pieces a chemical or a physical change? 9. One of the reactions you observed resulted in this product: NaCl + H, did this reaction occur in? Automatically turned brown. bubbled and turned Or if you need this sample for free, we can send it to you via email. NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. green, the crystals Appearance Starch LAB REPORT 4 Observations of Chemical and Physical Change PART 1 - OBSERVATIONS OF CHEMICAL CHANGE No credit will be given for this lab report if the Data section is not completely filled out and if the required photographs are not received. Appearance Question/ Well Number clear liquid immediately t yes Reactions/Observation. 5. Color change to a glossy yellow from clear. 3. Question: 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) verif y that it is vinegar, you add a few drops of phenolphthalein. The only chemical that has a physical change when heated was the mossy zinc. city of semmes public works. Bisulfate SessionCourse Spring 2021 MaxwellChemistry 30A 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. drops) Separates to edges leaving hole in the middle. That yellow stayed concentrated at the top segregated. We have received your request for getting a sample. Nitrate You found a sample of a solution that has a fainthat it is vinegar, you add a few drops of phenolpht odor resembling vinegar (an acid). 0000003003 00000 n your answer with observations made and recorded in Data Table 2. 6. _____ magnesium generates a very bright light. iPad. 0000023384 00000 n Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on 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. Suppose a household product label says it contains sodium hydrogen carbonate (sodium. 5 Automatically turned brown and when the starch was added it turned black. 6. 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(AB Molar mass = 129.84 g/mol). a dark blue formed Carbonate The following item is based on an analysis of the data. Describe the similarit ies and/or dif f erences between heating and burning the CuCO . A(n) _____ is the explanation of why something hwhat happened. does not mean youchanged the. College of DuPage. 7. CuSO4 Devise a simple test to confirm tsupposed to contain lead (an ingredient inhe presence or absence of lead in that hair ii. 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. immediate ch yes Then allow the melted wax to cool. 2. 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. Write the chemical equation for the reaction in well A6. in the beginni yes Lesson Observations of Chemical Changes 2. 1. Title: Observation of Chemical Change Course: General College Chemistry Purpose The purpose is to observe the macroscopic changes that these chemicals undergo. Explain your answer. Three of the flavor-samples turn a murky green indicating thelikelihood of acid/base balance. 5. Identify the chemical in the table. IKI Indicator Copper(I) clear liquid No color change, clear. Want to add some juice to your work? Obsarvation 0000002652 00000 n Data Table 1: Chemical = Change' Observations Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato Chemical #2 (4 . I also learned that these chemical reactions could be very Explain your answer. 1 Shredding paper A white precipitate formed from the mixing of two liquids is an indication of a chemical change. Well Chemical #1 (4 drops) Chemical #2 (4 drops) Observations: Chemical Change (Y/N) A1 NaHCO3 Sodium Bicarbonate HCl Hydrochloric Acid When the HCL was added, it bubbled for about 2 seconds then stopped. In addition, the student should also gain a betterunderstanding of the household chemicals that they use in their day to day lives.Procedure:Observe the chemical changes that occur by mixing a list of .
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