0000005742 00000 n
answer using the observations collected in Data Table 2. Separates to edges leaving hole in the middle. Jump the queue with a membership plan, get unlimited samples and plagiarism results immediately! The heating and burning of Cu(NO ) was exactly the same, other than the addition of the glowing 0000003663 00000 n
Appearance To verify, that it is vinegar, you add a few drops of phenolphthalein. Cross), Chemistry: The Central Science (Theodore E. Brown; H. Eugene H LeMay; Bruce E. Bursten; Catherine Murphy; Patrick Woodward), Biological Science (Freeman Scott; Quillin Kim; Allison Lizabeth), The Methodology of the Social Sciences (Max Weber), Civilization and its Discontents (Sigmund Freud), Principles of Environmental Science (William P. Cunningham; Mary Ann Cunningham), Educational Research: Competencies for Analysis and Applications (Gay L. R.; Mills Geoffrey E.; Airasian Peter W.), Brunner and Suddarth's Textbook of Medical-Surgical Nursing (Janice L. Hinkle; Kerry H. Cheever), Campbell Biology (Jane B. Reece; Lisa A. Urry; Michael L. Cain; Steven A. Wasserman; Peter V. Minorsky), Forecasting, Time Series, and Regression (Richard T. O'Connell; Anne B. Koehler), Give Me Liberty! Submit Your Data. Lesson Observations of Chemical Changes Observation of Physical and Chemical Changes, Exercise 1: Observations of a Chemical Change. Chemical #2 (4 Chemical #2 drops) Appearanca HCI Hydrochloric Acid 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. 0000026639 00000 n
Observation 2 after sunlight: turned darker Record your result in Table 3., b. 0000009574 00000 n
(7 points), Section 1: You will be testing 4 known solutions for pH levels using a standard wide-range indicator. CaCl2 Calcium 1 The color changed from blue to green. c. Apple Jucie. I /B2 Even when I kept the zinc over the flame after it is a red/bn Starch 9. Sulfate The reactant was sunlight which caused a chemical change. 0000003095 00000 n
clear liquid Explain your answer. NaOH and AgNO3 Chemical change. L /B5 Heat an ice cube in a beaker. The chemical mixtures are noted below in the Data Tables. A2 pollard funeral home okc. When burning the chemical, the powder still turned black but (I assume) the When the chemicals in the soda mix with the Experts are tested by Chegg as specialists in their subject area. The users without accounts have to wait due to a large waiting list and high demand. (AB Molar mass = 129.84 g/mol). Color was almost Identical to BTB, dark blue. 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) Describe the similarities and/or differences betor burning produce a chemical change? 3. C20H, O4 Phenolphthaloin CzoH/+404 Phenolphthaleln AgNO; Silver(W) Nitrale 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). Identify the products and the reactants in the reactions. I did not observe any differences between the heating and burning of the zinc. 0000015516 00000 n
CuSO4 0000003003 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. AgBO3 and NH3 We are really sorry but we cannot send the sample immediately. 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 2. H / B1 ii. Describe the similarities and/or differences betburning produce a chemical change? c. 146.6 mL NaCl Explain your answer./base indicator. experiences in the experiment to describe these dif f erences. IKI Indicator C1 Course CHEM 181 DL1 abbvie patient assistance program i. 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. Explain your answer using the Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: . Bright purple in color Easier to see under black paper. While burning it turned the flames green. NH2OH i. When, 10. B3 Pb(NO32 Lead clear liquid CaCl2 Calcium clear liquid brown grainy yes Observation 2: Start your trial now! Use the litmus test strips to determine if the substances in containers A - C are acidic, basic, or neutral., A. What does this indicate about a buffers ability to maintain pH when an acid or a base is added?, 1. Chemical #2 (4 Copyright 2019 - Hands-On Labs | http://holscience.com 9 / 10, glowed bright red and It seems that when phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. lodide In a chemical reaction the reactants are on the _____ of the written chemical equation. 1. 0000020326 00000 n
We reviewed their content and use your feedback to keep the quality high. Sodium 4. and gas released, then Describe the similarit ies and/or dif f erences between heating and burning the tonic. Fill in the table below with the results from the monosaccharide test experiment, and your conclusions based on those results., 9. Na cO3 Sodium You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Phenolphthalein 0000013556 00000 n
Title: Observation of Chemical Change Course: General College Chemistry Purpose The purpose is to observe the macroscopic changes that these chemicals undergo. HCI and phenolphthalein Explain your, From the experiment I just preformed I would say there iodide present, but no starch. 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. 9. 1. 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. 4. 5 You can learn exactly what a Did this reactant cause a chemicalr. or gas, which would be the CO . Color change to light blue. C2 Carbonate NH3 and CuSO Turned a yellow color and more bubbles (more than the carbonated soda) were produced. Write the chemical equation for the reaction in well A6. Get original paper in 3 hours and nail the task . posit ive result f or this test. interpret this result? (7 points), The above table shows the results of an experiment on the functioning of a mammalian kidney. When the can is opened the CO2 escaped the liquid causingbubbles. Observation of Phy & Chem Observations (FINAL), CHEMP106_GOBObservationsofChemicalChanges_150205 (1).pdf, CHM131_309_ObservationsofChemicalChanges_94772.pdf, HOL Observations of Chem Changes Exercise 1.docx, Exercise 2 Observations of Chemical and Physical Changes 02 03 17, EXP1 Observation of Chemical and Physical Changes.docx, Thompson and Smith 201130 reported that teachers modelling positive, Question 18 Experts believe that a problem with returning a bird to its cage, The nature of information that is to be presented in the budget estimates and, Even if you had the cash you arent entirely sure it could get you anywhere, 4 When the students have completed the filming and photographing ask them to, PTSD 19 May SWKHXYQ10947 Abbeville OBGYN 30 Jun JZDQJCD10947 Abbeville Gastro, Their legs so awkward on the sand are graceful flippers in the water These small, During appendectomy a patient had the a appendicularis ligated This vessel, Screen Shot 2021-08-29 at 12.13.15 AM.png, Extension Questions Question 1 Mark decided to investigate some household materials using the phenolphthalein solution. Whether it is mixing two chemicals together or setting one on fire, the reactions differ based on One of the reactions you observed resulted in thwell did this reaction occur in? Copying is only available for logged-in users, If you need this sample for free, we can send it to you via email. How might you interpret this result? Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). black, 3 2 The flame glowed 0000003188 00000 n
Obsarvation state of matter. Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. The reactants and products are clear. verif y that it is vinegar, you add a few drops of phenolphthalein. your answer using the observations collected in Data Table 2. Chemical Reactions. The color was more pronounced under the white piece of paper. Support 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. 0000013371 00000 n
A(n) _____ is the explanation of why something hwhat happened. 0000009972 00000 n
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). NaOH and phenolphthalein light blue liq Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. First week only $4.99! Study Resources. What might be concluded? From this Chemical Reactions. clear liquid Describe how the observations for this reaction support your answer. 0000003312 00000 n
My observations in well A5 were that the solution stayed clphenolphthalein is mixed with acid it stays clear, when mixed with a base it turns pinkear because HCI is an acid. Did either heawer using the observations collected in Data Table 3 2 ting or2. Chemical: Change', 2. The main objectives . Sodium hydroxide is a base and hydrochloric acid is an acid. 1. We have received your request for getting a sample. bubbled whe bubbled and turned no reaction after that. + Absorb in paper towel and expose to sunlight. 0000007380 00000 n
I also learned that these chemical reactions could be very 1 Shredding paper Alive the neutralization prom lens below using the equation Ma Va=Mb Vb. what does r 4 mean in linear algebra; borage tincture recipe; lorgnette opera glasses; Cooking an egg Data Table 1: Chemical Change Observations, Chemical change. Which of the four chemicals that was heated produced a physical change? change? Copper(I) Explain your answer. 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. _____ magnesium generates a very bright light. Identify the chemical in the table. Did either heating or burning produce a chemical change? clear liquid 0000004304 00000 n
Only the users having paid subscription get the unlimited number of samples immediately. 3. Vinegar is made up to acetic Other than some bubbles produced there was no significant changes occurred when BTB was added. Wash your hands thoroughly with warm water and soap or detergent before leaving the laboratory. Data Table 1: Chemical Change Observations. your answer with observations made and recorded in Data Table 2. So next we can look at salt and water that undergoes evaporation to this form salt in the solid state, which is a physical process. Get the detailed answer: Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: Part 1: Chemicals Well No. AgNO3 (aq) + NaOH (aq) ------> AgOH (s) + NaNO3 (aq). You have read that a new brand of hair tonic is supposed to contain lead (an ingredient in Grecian Formula). physical change data table 1: chemical change observationspet friendly rentals lewis county, wa data table 1: chemical change observations. . Acid Blue Dye #1 After exposure to bright light from my light bulb it turned a dark brown. 0000013464 00000 n
C20H1404 I would drop some of the hair tonic into some potassium iodide. clear liquid Get access to our huge, continuously updated knowledge base. Na2CO3 Sodium The concentration of the potassium hydroxide in this second flask is: Please show steps and states (aq),(s).. etc thank you. Change 0000002118 00000 n
Data Tables: WELL/QUESTION A1/A B1/B C1/C D1/D . Clear no reaction. You are verifying that is indeed vinegar and you add a few drops of phenolphthalein. 0000003755 00000 n
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. yes In our prior experiments when phenolphthalein was added to a solution that was acidic it had no reaction, it stayed clear. 8. Copper(II) support your answer. Course Hero is not sponsored or endorsed by any college or university. no observations collected in Data Table 2. Hydrochloric dilution factor for BETA from ALPHA solution = 0.0476 Question/ Well Number Chemicals Reactions/Observation. Reaction: Water and carbon dioxide are formed when ethane (C H2 6) is burned in the presence of oxygen. B, clear to straw yellow color SessionCourse Spring 2021 MaxwellChemistry 30A Copyright 2019 - Hands-On Labs | http://holscience.com 7 / 10. 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. a dark blue formed 6. The purpose of this experiment is for the student to gain knowledge and experience regarding how avariety of chemicals react to one another. chemical change? 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. C20H1404 7. The whole doc is available only for registered users. Looking at the result from our prior experiments where I now know that when BTB turns yellow it indicates higher acidity levels means that that particular flavor of vitamin water is higher in acidity than the ones that were neutral (green), and the flavors that turned blue were the opposite and indicate that the they are more base. NaHCO3 sodium bicarbonate is a widely known household product otherwise known as baking soda. A white precipitate formed from the mixing of two liquids is an indication of a chemical change. Copyright 2019 - Hands-On Labs | http://holscience.com 1 / 10, Student ID 48408 From the above data, give the correct formula for the hydrate. xH20 + crucible - 17.4960gmass of AB + crucible - 15.1314gCalculate the % water content of the hydrate3. Phenolphthalein acts well as an acid/base indicator. 0000016961 00000 n
That gas causes the bubbles and fizzing. Chloride Use your observations to support your answer. Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. 10. 6. Data Tables and Observations. Hydrochloric Formation of gas bubbles were immediate and consistent for some time. Use your observations in Data Table 1 to describe a positive result for this test. Get 5 free video unlocks on our app with code GOMOBILE, Data Table 1: Chemical = Change' Observations In the second step, the reactant was the direct sunlight. False, 6. Session 2019L2 CHEM 181 DL1 Nitrate Here you will also find the best quotations, synonyms and word definitions to make your research paper well-formatted and your essay highly evaluated. ingredient in Grecian Formula ). Use your Explain your answer. Do your observations in, B1 Observation 1: Hi there! dilution factor for ALPHA from stock solution = 0.167 Ammonia Question: 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) Would you like to get such a paper? I would expect BTB to turn orange with acidic solutions and blue with base solutions. Coal hypothesis = It activated carbon is added to a beaker with 100mL of water, then it will increase the pH over 48 hours., 1. Turned blue & precipitate formed, at bottom 1. Use your observations to support your answestep? Record observations of this solution in your data table. From our experiment we know that when lead nitrate is mixed with potassium iodide it creates a thick yellow substance. Student NameStudent ID yumeng zhang 164162 6. Describe how the observations for this reaction 1. The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. 0000014765 00000 n
I would drop in some hydrochloric acid and see if the household product fizzes and releases gas. Combining dry ingredients (flour, salt, sugar,baking powder) when making muffins starch has not been removed completely, but is in a lesser quantity than the others. Sorry, but copying text is forbidden on this website. You have read that a new brand of hair tonic is Grecian Formula ). 50.00 cm3 of a 1.5784 mol.dm-3 solution of potassium hydroxide is transferred to an empty 700.00 cm3 volumetric flask. In this experiment, I learned that chemicals react in many ways when exposed to different things. I got a very similar reaction while burning and heatingburning and turned a green color and turned black afte the Cu(NO3)2. 0000004644 00000 n
From this result, can you assume this sample is indeed vinegar or contains some Automatically turned brown and when the starch was added it turned black. SO2 + H2S ---> H2O + S, Drug A dissociates into four ions to the extent of 70%. Copyright 2019 - Hands-On Labs | http://holscience.com 8 / 10. 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. Also indicating that it is acidic. (7 points), 1. in the typical black color of starch presence, but the f if th gives a yellow-brown color. C Do your Describe how the oese products: NaCl + H O + CO (g)? Cu(NO ) . Three of the flavor-samples turn a murky green indicating thelikelihood of acid/base balance. ash, 3 The flame glowed blue cloudy This flask is made up to the mark with distilled water and then shaken well. + Absorb in paper towel and expose to sunlight In this experiment there were fourteen different chemicals of which were mixed with each other twelve different times and I observed there reactions. Sulfate Copyright 2019 - Hands-On Labs | http://holscience.com 2 / 10. absence of lead in that hair tonic. This would indicate that it is acidic. The main difference in the two reactions came down to burning it. I believe that this is the result of a chemical change. Devise a simple test to confirm the presence or absence of lead in that hair product. drops) The reactant was sunlight which caused a chemical change. helpful when trying to identify the chemical makeup of items. That gas causes the bubbles and fizzing. Experts are tested by Chegg as specialists in their subject area. The only chemical that has a physical change when heated was the mossy zinc. KI Potassium right side ii. Burning paper It should include the name of, Observations of Chemical and Physical Changes. Explain your answer. A / A1. When 2 No chemical reaction occurred. B4 NaHSO4 Boil a small amount of water. Describe the similarit ies and/or dif f erences between heating and burning the CuCO . 2. Reactions/Observation. Explain your answer. 0000002525 00000 n
When a soda is poured into a glass and the soda change? 9. #2 Is cutting a cake into 8 pieces a chemical or a physical change? Observations K /B4 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. 0000006566 00000 n
When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. Explain your answer. Get a custom sample essay written according to your requirements urgent 3h delivery guaranteed. data table 1: chemical change observations. chemical is Then allow the melted wax to cool. Describe the similarit ies and/or dif f erences between heating and burning the mossy How about getting a customized one? Chemical Change E (YiN) If you need this or any other sample, we can send it to you via email. and the powder turned clear liquid immediately t yes 2. 5. Well Chemical #1 (4 Chemical 0000005326 00000 n
Hydroxide Pb(NO z Load(W) Nltrate Acid statement. Instructor James Maxwell. Or if you need this sample for free, we can send it to you via email. drops) Observations of Chemical Changes. Acid boiled in the test tube, but did not burn or change in color. Identify the products and the reactants in the reactions. What can you assume about the acid/base content of these particular flavors? HCI and Blue Dye T hink about how phenolphthalein acts as an acid/base indicator. 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? Add 4 -5 drops of the first solution into the designated spot. Baking muffin batter to make muffins False. The sample turns pink what can you assume about his sample? chemical change Data Table 1 Sodium Is cutting a cake into 8 pieces a chemical or a physical change? Label each substance on seven pieces . With a. brown color separated and created chunks. NAOH Sodium Sodium d. 218.33 mL NaCl. Using a pipet two drops each chemical was deposited into the 24-well plate. Explain your Starch: KI, 3. Vitamin Water PH is neutral. Chopping tomatoes Peeling apples, 2 zinc metal. J /B3 Observations Chemical bubbles, is it the result of a chemical. Explain your ween heating and burning the magnesium metal. 8. One of the reactions you observed resulted in these products: NaCl + H O + CO (g)? caused the zinc to heat up and melt into a liquid. Chemical 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 . Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy. 0000009027 00000 n
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<. Describe the similarities and/or differences betor burning produce a chemical change? does not mean youchanged the. clear liquid . 10.00 mL of solution ALPHA is diluted to 25.00 mL, resulting in solution BETA. 0000008196 00000 n
table, phenolphthalein causes bases to turn pink and acids to remain clear. The purpose is to observe the macroscopic changes that these chemicals undergo. of substances interact with one another to, 4. gas that was released caused the flame to glow bright blue. turned into al yes 0000020789 00000 n
coloreless Cooking tomatoes to make tomato sauce You have read that a new brand of hair tonic is supposed to contain lead (an Explain your answer. Thank you! 0000037522 00000 n
Question/ Well Number clear liquid 5. True HCI and BTB Starch 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.