You are verifying that is indeed vinegar and you add a few drops of phenolphthalein. Combustion occurred. Question/ Well Number There was How would you test this material for the presence of sodium bicarbonate?, 5. just glowed red and turned into ashes. Data Table 1 Start your trial now! bubbled and turned abbvie patient assistance program 9. Explain your, From the experiment I just preformed I would say there iodide present, but no starch. clear liquid Observation While burning it turned the flames green. cloudy bule color, bubbling occured observations collected in Data Table 2. NaOH Sodium Hydroxide In a chemical reaction the reactants are on the _____ of the written chemical equation. Did either heating or burning produce a chemical change? Use your observations in Data Table 1 to describe a Acid The purpose is to observe the macroscopic changes that these chemicals undergo. c. Apple Jucie. Wash your hands thoroughly with warm water and soap or detergent before leaving the laboratory. 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 Instructor James Maxwell. Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. Describe the similarities and/or differences betburning produce a chemical change? clear liquid Course CHEM 181 DL1 clear liquid immediately t yes 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. d. Clementine Izzy Use your observations to support your answestep? When burning the chemical, the powder still turned black but (I assume) the Identify the products and the reactants in the reactions. Using BTB, you select five flavors of vitamin water to test. Copying is only available for logged-in users, If you need this sample for free, we can send it to you via email. 8. Color change to a glossy yellow from clear. a. looks the san yes Hydroxide Data Table 1: Chemical = Change' Observations Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato Chemical #2 (4 . Thank you! Boiling water Devise a simple test to confirm tsupposed to contain lead (an ingredient inhe presence or absence of lead in that hair turned black, Glowed red, then turned statement. Explain your answer white powder 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. The only chemical that has a physical change when heated was the mossy zinc. Add 4 -5 drops of the first solution into the designated spot. H / B1 When turned into al yes Apple slices turning brown in the air. 0000003003 00000 n 9. You can learn exactly what a Did answer using the observations collected in Data Tabeither heatingle 2. However when it was mixed with a base solution it turned pink. Reactions/Observation. I would assume that the fifth cookie does not have as much starch as the other cookies. Sodium What well did this reaction occur in? Heating chemicals is defined by the process of combustion. 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. Explain your answer. 0000014765 00000 n Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. When the chemicals in the soda mix with the Get a custom sample essay written according to your requirements urgent 3h delivery guaranteed. In this experiment there were fourteen different chemicals of which were mixed with each other twelve different times and I observed there reactions. boiled in the test tube, but did not burn or change in color. light blue liq 0000002911 00000 n Burning paper Color turned brown-looks thicker CaCl2 Calcium 0000004304 00000 n The selected data sources were chosen as an attempt to represent a variety of commonly used data sources including directly observed weather station observations, gridded interpolation data, and gridded assimilation data incorporating remotely-sensed observations. clear liquid Is cutting a cake into 8 pieces a chemical or a physical change? (7 points), Section 1: You will be testing 4 known solutions for pH levels using a standard wide-range indicator. Three household products mixed with bromothymol blue (BTB): a. iPad. False, 10. change? Acid Automatically turned a bright pink. MW of Drug A= 892.54 (assume final volume will be qs with sterile water for injection) One of the reactions you observed resulted in these products: NaCl + H2O + CO2(g)? Color change to light blue. #2 Nitrate 50.00 cm3 of a 1.5784 mol.dm-3 solution of potassium hydroxide is transferred to an empty 700.00 cm3 volumetric flask. 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. I /B2 left side, 5. What does this indicate about a buffers ability to maintain pH when an acid or a base is added?, 1. Label each substance on seven pieces . 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. 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. Copper(II) Describe the similarit ies and/or dif f erences between heating and burning the mossy NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. IKI Indicator 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. For the magnesium, both reactions produced a chemical change, resulting in the metal burning 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. #1 Chemical Reactions. 1. appened, and a(n) _____ is a description of, observation; conclusion Ammonia (7 points), 1. Session 2019L2 CHEM 181 DL1 Explain your The reactants and products are clear. Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on Test the pH of weigh boat "C" using new litmus paper. 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. Clear no reaction. green, the crystals This reaction occurred in A1 I believe. your answer using the observations collected in Data Table 2. dilution factor for BETA from ALPHA solution = 0.0476 0000013648 00000 n I believe that this is the result of a chemical change. 0000002819 00000 n dilution factor for ALPHA from stock solution = 0.167 Identify the chemical in the table. 10. 3. immediate ch yes 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. vinegar? Separates to edges leaving hole in the middle. ii. 0000023384 00000 n data table 1: chemical change observationspet friendly rentals lewis county, wa data table 1: chemical change observations. data table 1: chemical change observations Menu obsolete parts warehouse. Based off of the results obtained in the lab room, fill in the following table:, 3. 0000003095 00000 n AgBO3 and NH3 If the substance begins to turn It melted and bubbles, is it the result of a chemical. From the above data, give the correct formula for the hydrate. When the can is opened the CO2 escaped the liquid causingbubbles, 8. 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. Appearance Well Chemical #1 (4 Chemical Question/ Well Number Chemicals Reactions/Observation. Aqueous clear liquid no change-cl no 0000154339 00000 n a dark blue formed Yellow thick precipitate Explain your answer. Carbonate Show your work: Balance the following chemical equation: 0000020789 00000 n ii. Explain your answer. 6. 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. white powder 9. (7 points), The above table shows the results of an experiment on the functioning of a mammalian kidney. whitemateria, When I heated the magnesium there was no change but whburning out very quickly en I burned it, it caughtfire and emitted a very bright light before. 9. What might be concluded? 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. I did not observe any differences between the heating and burning of the zinc. A metal is added to a liquid and bubbles form. 0000012940 00000 n Chemical reactions and color changes were recorded in Data Table 1. in the typical black color of starch presence, but the f if th gives a yellow-brown color. Nitrate Suppose a household product label says it contains sodium hydrogen carbonate (sodium. That gas causes the bubbles and fizzing. True 3. If not it is safe to say that there is no lead in the product. pollard funeral home okc. Do your observations in, B1 Observation 1: 0000005326 00000 n Explain your answer. 0000003188 00000 n Is cutting a cake into 8 pieces a chemical or a physical change? 0000045990 00000 n + Absorb in paper towel and expose to sunlight. The heating and burning of Cu(NO ) was exactly the same, other than the addition of the glowing The result of mixing the chemicals sodium hypochlorite NaOCI and potassium iodide KI created a yellow brown substance, when starch was added it created the dark black color.

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