right side Colorless Blue Dye #1 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. data table 1: chemical change observations. 9. clear liquid Color change to a glossy yellow from clear. The reaction was clear. 1. 2. Data Table 1: Chemical Change Observations. AgNO3 Silver(I) Do your Data Table 2: Reaction Observations Instructor Lea Stage, CHEM 181 DL1 While the data sources included here represent a non-exhaustive list of those . The heating and burning of Cu(NO ) was exactly the same, other than the addition of the glowing It did turn a bit darker blue. clear liquid brown grainy yes 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) Hydroxide NaOH Sodium Hydroxide Data and Observations Data TABLE 1: Reactions Expected Well #1 Question Chemicals Reaction AY Enhanced HCI - CO Clear, bubbles formed HCI and BIT Orange color, homogeneous. zinc metal. NAOH Sodium 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. Turned a dark orange color. Describe the similarit ies and/or dif f erences between heating and burning the Copyright 2019 - Hands-On Labs | http://holscience.com 2 / 10. Observation 2 after sunlight: turned darker NaOH Sodium Question/ Well Number chemical compound I also learned that these chemical reactions could be very
Chemistry 30A Observations of Changes - Studocu When phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. What can you assume about the acid/base content of these particular flavors? 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. Study Resources. 4. In the second step, the reactant was the direct sunlight. In this experiment there were fourteen different chemicals of which were mixed with each other twelve different times and I observed there reactions. green, lots of fizz ing 0000014765 00000 n
From this, Observations of Chemical and Physical Changes. There was 0000011267 00000 n
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Use your observations to support your answer. city of semmes public works. 5 bubbles, is it the result of a chemical. If the substance begins to turn Describe the similarities and/or differences betor burning produce a chemical change? Automatically turned a dark green. Label each substance on seven pieces . c. Apple Jucie. After adding BTB the color automatically changed to a copper color. A _____ is a change in the form of a substance. KI Potassium A chemical change may also be referred to as a _____. When burning the chemical, the powder still turned black but (I assume) the You found a sample of a solution that has a f aint odor resembling vinegar (an acid). immediate ch yes 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. 0000002911 00000 n
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. This reaction occurred in A1 I believe. Thank you! Use your observations in Data Table 1 to describe a positive result for this test. Describe how the observations for this reaction I did not observe any differences between the heating and burning of the zinc. Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). Your Answer Is Very Helpful For UsThank You A Lot! physical change, 2. 0000004304 00000 n
Observations + Absorb in paper towel and expose to sunlight. gas that was released caused the flame to glow bright blue. Use your observations in Data Table 1 to describe a The blue crystals melted during both hear a while. Cu(NO ) . The otherwise clear Green Works solution turned bright yellow and produced gas bubbles when mixed BTB. Suppose a household product label says it contains sodium hydrogen carbonate Aqueous 1. You have read that a new brand of hair tonic is Grecian Formula ). CuSO4 How would you test this material for the presence of sodium bicarbonate?, 5. Get 5 free video unlocks on our app with code GOMOBILE, Data Table 1: Chemical = Change' Observations 0000009574 00000 n
A(n) _____ is the explanation of why something hwhat happened. Carbonate 10.00 mL of solution ALPHA is diluted to 25.00 mL, resulting in solution BETA. T hink about how phenolphthalein acts as an acid/base indicator. The color was more pronounced under the white piece of paper. 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. became a white ash, 3 2 Melted and turned Show your work: Balance the following chemical equation: bubbled and turned
just glowed red and turned into ashes. 9. True Fill in the table below with the results from the monosaccharide test experiment, and your conclusions based on those results., 9. 0000008196 00000 n
Chloride drops) Cutting a steak, 3. state of matter. Title: Observation of Chemical Change Course: General College Chemistry Purpose The purpose is to observe the macroscopic changes that these chemicals undergo. Nitrate Explain your ansween heating and burning the Cu(NO ). Boiling water Chemical #2 (4 clear liquid bubbling and fizz ing 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! False. If not it is safe to say that there is no lead in the product. 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 your answer with observations made and recorded in Data Table 2. I would believe that the substance is actually sodium hydroxide. c. 146.6 mL NaCl 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. 0000042217 00000 n
One of the reactions you observed resulted in these products: NaCl + H2O + CO2(g)? Obsarvation
Answered: clear liquid CuSO4 Copper(I) B2 NH4OH | bartleby Bicarbonate 0000002652 00000 n
You'll get a detailed solution from a subject matter expert that helps you learn core concepts. It seems that when phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. What well did this reaction occur in? Which of the four chemicals that was heated produced a physical change? 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. left side, 5. NH; Aqucous Ammonia cloudy Labpaq lab 1: Observation of chemical change lab report . Also indicating that it is acidic. Exercise 1: Observations of a Chemical Change Data Table 1. occurred, Copyright 2019 - Hands-On Labs | http://holscience.com 6 / 10. 0000002033 00000 n
clear liquid Observation This is a chemical reaction because it Cooking an egg 8. Whatbservations for this reaction support your 0000003188 00000 n
Copyright 2019 - Hands-On Labs | http://holscience.com 4 / 10, Copyright 2019 - Hands-On Labs | http://holscience.com 5 / 10. black, 3 2 The flame glowed Explain your answer. Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. Using BTB, you select five flavors of vitamin water to test. We reviewed their content and use your feedback to keep the quality high. #2 Use your observations to support your answestep? KI and Pb(NO3) In our prior experiments when phenolphthalein was added to a solution that was acidic it had no reaction, it stayed clear. drops) ii. pollard funeral home okc. 10. Would you like to get such a paper? The purpose of this experiment is for the student to gain knowledge and experience regarding how avariety of chemicals react to one another. 0000029863 00000 n
Pb(NO z Load(W) Nltrate So, according to the
data table 1: chemical change observations Identify the chemical in the table.
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Find the corresponding IKI indicator. What does this indicate about a buffers ability to maintain pH when an acid or a base is added?, 1. That yellow stayed concentrated at the top segregated. Devise a simple test to confirm tsupposed to contain lead (an ingredient inhe presence or absence of lead in that hair 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./base indicator. Explain %PDF-1.6
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More pronounced with white paper. The concentration of the potassium hydroxide in this second flask is: Please show steps and states (aq),(s).. etc thank you. HCI and phenolphthalein Condensing vapor 9. However when it was mixed with a base solution it turned pink. Here you will also find the best quotations, synonyms and word definitions to make your research paper well-formatted and your essay highly evaluated. d. Clementine Izzy lodide We are really sorry but we cannot send the sample immediately.
observations of chemical reactions.docx - Observations of Chemical Blablawriting.com provide for you a wide variety of top-notch essay and term paper samples on any possible topics absolutely. The chemical mixtures are noted below in the Data Tables. in the beginni yes IKI indicator no reaction after that. Did either heating or burning produce a chemical change? Describe how the oese products: NaCl + H O + CO (g)? Did either heating or burning produce a chemical change? test this material f or the presence of sodium bicarbonate? 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. chemical change? posit ive result f or this test. white powder 1) To observe physical and chemical properties.
Lab 4 Report - Observations of Chemical and Physical Changes Exercise 1 0000013107 00000 n
Reactions/Observation. 0000003848 00000 n
Using your results f rom Data Table 1 as a guide, how would you and the powder turned or gas, which would be the CO . Three household products mixed with bromothymol blue (BTB): a. HC data table 1: chemical change observations June 14, 2022 salem witch trials podcast lore I. Observations of the React LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION . a dark blue formed clear liquid There is no chemical change here, so that only exists a physical change. The sample turns pink. Is cutting a cake into 8 pieces a chemical or a physical change? Copper(II) boiled in the test tube, but did not burn or change in color. statement. Pb(NO3}2 Melt a small amount of candle wax. A chemical reaction is a process where the atomsform new substances. NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. yes When the starch was added to sodium hypochlorite NaOCI and potassium iodide KI it turned black. Did either heating or burning produce a chemical change? 3. Describe the similarit ies and/or dif f erences between heating and burning the CuCO . Support clear liquid The lack of black would indicate that starch (complex sugars, meaning larger glucose molecules) is not present. 0000015516 00000 n
Is cutting a cake into 8 pieces a chemical or a physical change? 3. Explain your ween heating and burning the mossy zinc metal. b. Windex, i. helpful when trying to identify the chemical makeup of items. clear liquid immediately t yes 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. 1. Explain your ween heating and burning the magnesium metal. 0000012812 00000 n
A / A1. 10.00 mL of solution BETA is then diluted to 25.00 mL, producing solution GAMMA. Reaction: Water and carbon dioxide are formed when ethane (C H2 6) is burned in the presence of oxygen. turned the color of dark brown similar to rust on the paper towel. light blue liqu no Turned a yellow color and more bubbles (more than the carbonated soda) were produced. That gas causes the bubbles and fizzing. The solution is cloudy and there are smallflakes. Data Tables and Observations. 5. When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. Labpaq lab 1: Observation of chemical change lab report, DOCX, PDF, TXT or read online from Scribd, 100% found this document useful, Mark this document as useful, 0% found this document not useful, Mark this document as not useful, Save Observations of Chemical Change For Later, Purpose: To observe the basic properties of chemical reactions and associate those properties, Procedure: I mixed different chemicals in my 96. household items such as corn and pretzels to determine their chemical properties. Chopping tomatoes Peeling apples, 2 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.
experiences in the experiment to describe these dif f erences. (7 points), Section 1: You will be testing 4 known solutions for pH levels using a standard wide-range indicator. K /B4 appened, and a(n) _____ is a description of, observation; conclusion
Observations of Chemical Change | PDF | Hydrochloric Acid - Scribd Chemicals air while being poured into the glass, a gas is released. chemical is
Observation of chemical changes - Assignment Den data table 1: chemical change observations Menu obsolete parts warehouse. clear liquid immediately t yes Is cutting a cake into 8 pieces a chemical or a physical change? Question/ Well Number Chemicals Reactions/Observation. (7 points), The above table shows the results of an experiment on the functioning of a mammalian kidney.
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