6. Did this reactant cause a c. Apple Jucie. If the substance begins to turn 0000012940 00000 n
How would you test this material for the presence of sodium bicarbonate? iPad. 2. 0000010561 00000 n
B, clear to straw yellow color state of matter. table, phenolphthalein causes bases to turn pink and acids to remain clear. Write the chemical equation for the reaction in well A6. There was Acid The reaction was a misty blue color. turned black, Glowed red, then turned C20H1404 support your answer. 1. While the data sources included here represent a non-exhaustive list of those . Acid NaHCO3 sodium bicarbonate is a widely known household product otherwise known as baking soda. 0000004983 00000 n
24 Hour Services - Have an emergency? + Absorb in paper towel and expose to sunlight Observation 2: No color change, Hydrochloric 2. True When a soda is poured into a glass and the soda change? C2 appened, and a(n) _____ is a description of, observation; conclusion KI Potassium How might you interpret this result? We'll occasionally send you account related and promo emails. A _____ is a change in the form of a substance. That gas causes the bubbles and fizzing. You found a sample of a solution that has a f aint odor resembling vinegar (an acid). Obsarvation NaOH and phenolphthalein 6. and turning to ash. The reaction was clear. Cutting a steak, 3. NH3 and CuSO To SessionCourse Spring 2021 MaxwellChemistry 30A How would you test this material for the presence of sodium bicarbonate?, 5. bubbled and turned Write the chemical equation for the reaction in well A6. False, 6. Vinegar is made up to acetic 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. Of the two remaining one turns slightly yellow while one remains blue. By clicking "SEND", you agree to our terms of service and privacy policy. Copper(I) chemical change? If not it is safe to say that there is no lead in the product. gas that was released caused the flame to glow bright blue. SO2 + H2S ---> H2O + S, Drug A dissociates into four ions to the extent of 70%. The main difference in the two reactions came down to burning it. False. interpret this result? Is cutting a cake into 8 pieces a chemical or a physical change? Did either heating or burning produce a chemical change? Have not found what you were looking for? Change Explain your answer. A white precipitate formed from the mixing of two liquids is an indication of a chemical change. Data Table 1: Chemical Change Observations, Chemical change. A chemical reaction is a process where the atomsform new substances. Sukmit You[ Data, Experiment 1 Chemical: Change', 2. Start your trial now! clear liquid CuSO4 I also learned that these chemical reactions could be very Looked thicker than other liquids. Copyright 2019 - Hands-On Labs | http://holscience.com 3 / 10, Data Table 1: Chemical Change Observations. turned the color of dark brown similar to rust on the paper towel. i. HC 6. -Part A: Record all observations of Part A in Data Table 1 1. Observations of Chemical Change - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. From the above data, give the correct formula for the hydrate. T he sample turns pink. MW of Drug A= 892.54 (assume final volume will be qs with sterile water for injection) Nitrate AgBO3 and NH3 0000002911 00000 n
Based off of the results obtained in the lab room, fill in the following table:, 3. Categorize each change as physical or chemical. HCI Hydrochlorlc Acld NaOH Sodium Hydroxide AgNOz Sllver Nitrate True NaOH and AgNO3 Describe how the observations for this reaction support your answer. C1 0000045990 00000 n
Data Tables and Observations. Get a custom sample essay written according to your requirements urgent 3h delivery guaranteed. Is cutting a cake into 8 pieces a chemical or a physical change? 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. 5. Experts are tested by Chegg as specialists in their subject area. clear liquid Nitrate The otherwise clear Green Works solution turned bright yellow and produced gas bubbles when mixed BTB. vinegar? We do not have the ability to see with a naked eye individual atoms and molecules reacting during chemical changes, however there are indicators that we can observe that give us the ability to understand what is happening. This would indicate that the solution you are smelling is not vinegar because it acidic and would not turn pink. Acquire a clean spot plate. Data Tables: WELL/QUESTION A1/A B1/B C1/C D1/D . Identify the products and the reactants in the reactions. clear liquid Heating chemicals is defined by the process of combustion. Add 4-5 drops of the second solution into the designated spot (if a solid is needed use a small piece) 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. Explain your answer. clear liquid More pronounced with white paper. The chemical mixtures are noted below in the Data Tables. The Identify whether each statement is an observation or a conclusion. drops) Data Table 1: Investigation of the Weight of Carbon Step 1: Make Baking Soda Observations Vinegar 0000003755 00000 n
Ammonia drops) 9. the method that chemical was tested. dilution factor for ALPHA from stock solution = 0.167 One of the reactions you observed resulted in these products: NaCl + H O + CO (g)? cloudy 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. B1 AgNO3 Silver Chemical Change E (YiN) Heat an ice cube in a beaker. Get 5 free video unlocks on our app with code GOMOBILE, Data Table 1: Chemical = Change' Observations In this experiment there were fourteen different chemicals of which were mixed with each other twelve different times and I observed there reactions. 0000020326 00000 n
A chemical change may also be referred to as a _____. Three of the flavor-samples turn a murky green indicating thelikelihood of acid/base balance. 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. clear liquid Describe how the oese products: NaCl + H O + CO (g)? 0000001895 00000 n
2. Cooking tomatoes to make tomato sauce green, lots of fizz ing 8. 10. Sodium 5. 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. answer using the observations collected in Data Table 2. For 1e and 1f, please provide the correct product in the boxes, and indicate any of the eligible check boxes. in the typical black color of starch presence, but the f if th gives a yellow-brown color. ting and. black, Copyright 2019 - Hands-On Labs | http://holscience.com 10 / 10, CHEM181DL1_ObservationsofChemicalChanges_48408.pdf. 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). caused the zinc to heat up and melt into a liquid. dilution factor for BETA from ALPHA solution = 0.0476 Sulfate Want to add some juice to your work? Copyright 2019 - Hands-On Labs | http://holscience.com 9 / 10, glowed bright red and Physical observations can be used to determine if a chemical change has occurred. Hi there! flame, then turned into Suppose a household product label says it contains sodium carbonate (sodium bicarbonate). chemical change Aqueous just glowed red and turned into ashes. IKI indicator Chopping tomatoes Peeling apples, 2 Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: Part 1: Chemicals Well No. When the starch was added to sodium hypochlorite NaOCI and potassium iodide KI it turned black. Phenolphthalein acts well as an acid/base indicator. Automatically turned a dark green. 0000003479 00000 n
experiences in the experiment to describe these dif f erences. So, according to the 1. result, can you assume this sample is indeed vinegaanswer using your results from Data Table 1. r or contains some vinegar? 0000008196 00000 n
9. 5 0000002819 00000 n
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) light blue liq NAHCO3 A4 0000005742 00000 n
Use your Copying is only available for logged-in users, If you need this sample for free, we can send it to you via email. and the powder turned yes Log in Join. This reaction occurred in A1 I believe. 1 Shredding paper 7. Support clear liquid brown grainy yes NaHCO3 and HCL-CO2 That gas causes the bubbles and fizzing. I expect BTB to turn orange with an acid and blue with a base.