c. 146.6 mL NaCl looks the san yes clear liquid When a soda is poured into a glass and the soda change? green, the crystals change? A4 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. Explain your answer. K /B4 While the data sources included here represent a non-exhaustive list of those . chemical compound Is cutting a cake into 8 pieces a chemical or a physical change? Identify an example of a chemical change. 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). How about getting a customized one? Yellow thick precipitate Is cutting a cake into 8 pieces a chemical or a physical change? dark blue liq When phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. 0000004304 00000 n c. Apple Jucie. Here you will also find the best quotations, synonyms and word definitions to make your research paper well-formatted and your essay highly evaluated. clear liquid The concentration of the potassium hydroxide in this second flask is: Please show steps and states (aq),(s).. etc thank you. Observations Chemical 8. 0000012055 00000 n There is no chemical change here, so that only exists a physical change. colorless 1 The color changed from blue to green. left side, 5. clear liquid CuSO4 5.00 mL of stock solution is diluted to 25.00 mL, producing solution ALPHA. That yellow stayed concentrated at the top segregated. Phenolphthalein In this experiment, I learned that chemicals react in many ways when exposed to different things. Chemical Reactions. clear liquid When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. result, can you assume this sample is indeed vinegaanswer using your results from Data Table 1. r or contains some vinegar? Heat an ice cube in a beaker. chemical change? Add 4-5 drops of the second solution into the designated spot (if a solid is needed use a small piece) A6 observations collected in Data Table 2. Just because you change the shape of somethingchemical makeup. Cutting a steak, 3. I did not observe any differences between the heating and burning of the zinc. No problem! HC Condensing vapor Observations Don't waste time Get a verified expert to help you with Observation of chemical change LabPaq Hire verified writer $35.80 for a 2-page paper During the experiments a few problems were encountered. I would believe that the substance is actually sodium hydroxide. *jh DV_ =&)&(idnb]~U4g0Dt8otSb !0=rxg_mSy8|+o="Z7X ~3Ala}Jr\N/c6&bl:%qORyK1LkrL+N5 endstream endobj 61 0 obj <. 0000002033 00000 n Acquire a clean spot plate. This reaction occurred in A1 I believe. Sukmit You[ Data, Experiment 1 HCI and BTB caused the zinc to heat up and melt into a liquid. Chemical #2 (4 Chemical #2 drops) Appearanca HCI Hydrochloric Acid Explain your 0000020326 00000 n : an American History (Eric Foner), Determining Water Hardness Using a Titrator, Lab Report Ex 7 Temperature on Equilibrium, United States History, 1550 - 1877 (HIST 117), Human Anatomy And Physiology I (BIOL 2031), Strategic Human Resource Management (OL600), Concepts of Medical Surgical Nursing (NUR 170), Expanding Family and Community (Nurs 306), Basic News Writing Skills 8/23-10/11Fnl10/13 (COMM 160), American Politics and US Constitution (C963), Professional Application in Service Learning I (LDR-461), Advanced Anatomy & Physiology for Health Professions (NUR 4904), Principles Of Environmental Science (ENV 100), Operating Systems 2 (proctored course) (CS 3307), Comparative Programming Languages (CS 4402), Business Core Capstone: An Integrated Application (D083), 315-HW6 sol - fall 2015 homework 6 solutions, 3.4.1.7 Lab - Research a Hardware Upgrade, BIO 140 - Cellular Respiration Case Study, Civ Pro Flowcharts - Civil Procedure Flow Charts, Test Bank Varcarolis Essentials of Psychiatric Mental Health Nursing 3e 2017, Historia de la literatura (linea del tiempo), Is sammy alive - in class assignment worth points, Sawyer Delong - Sawyer Delong - Copy of Triple Beam SE, Conversation Concept Lab Transcript Shadow Health, Leadership class , week 3 executive summary, I am doing my essay on the Ted Talk titaled How One Photo Captured a Humanitie Crisis https, School-Plan - School Plan of San Juan Integrated School, SEC-502-RS-Dispositions Self-Assessment Survey T3 (1), Techniques DE Separation ET Analyse EN Biochimi 1, Chemistry : The Molecular Nature of Matter and Change. 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. Copyright 2019 - Hands-On Labs | http://holscience.com 8 / 10. i. 0000012940 00000 n 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) Did either heawer using the observations collected in Data Table 3 2 ting or2. How about getting this access immediately? Describe how the observations for this reaction 9. Sodium After exposure to bright light from my light bulb it turned a dark brown. Have not found what you were looking for? i. NaHCO3 and HCL-CO2 magnesium metal. College of DuPage. 0000013556 00000 n 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! 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) 0000004644 00000 n True of substances interact with one another to, 4. Vinegar is made up to acetic 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. 0000014765 00000 n The result of the mixture indicates that the solution is basic because it turned (stayed) blue. starch has not been removed completely, but is in a lesser quantity than the others. 2003-2023 Chegg Inc. All rights reserved. Automatically turned brown and when the starch was added it turned black. Categorize each change as physical or chemical. Get original paper in 3 hours and nail the task . The reaction was clear. Acid clear liquid NH; Aqucous Ammonia Devise a simple test to conf irm the presence or 0000001895 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. 0000037522 00000 n in the typical black color of starch presence, but the f if th gives a yellow-brown color. ting and. using the observations collected in Data Table 2. Chemical Coal hypothesis = It activated carbon is added to a beaker with 100mL of water, then it will increase the pH over 48 hours., 1. Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato 2. 0000015516 00000 n 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. Acid Cooking an egg clear liquid + Absorb in paper towel and expose to sunlight Observation 2: No color change, Observations of Chemical Changes. How might you interpret this result? That gas causes the bubbles and fizzing. 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. B1 AgNO3 Silver Identify the products and the reactants in the reactions. colorless 0000013648 00000 n Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. 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. your answer using the observations collected in Data Table 2. A(n) _____ is the explanation of why something hwhat happened. Sorry, but copying text is forbidden on this website. 0000008196 00000 n C20H1404 Data Table 1: Chemical Change Observations, Chemical change. HC Course CHEM 181 DL1 The chemical mixtures are noted below in the Data Tables. 5 Data Table 1 Study Resources. tonic. Hydroxide Physical observations can be used to determine if a chemical change has occurred. When the can is opened the CO2 escaped the liquid causingbubbles. NAHSO4 Institution De Anza College 0000003571 00000 n 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? Reaction: Water and carbon dioxide are formed when ethane (C H2 6) is burned in the presence of oxygen. Both methods Aqueous . I would assume that the fifth cookie does not have as much starch as the other cookies. Use your observations to support your answer. 9. Reaction Write the chemical equation(s) for each part of the following terms as it relates to this experiment., 5.List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. 0000002911 00000 n We use cookies to give you the best experience possible. 24 Hour Services - Have an emergency? For the magnesium, both reactions produced a chemical change, resulting in the metal burning Use your observations in Data Table 1 to describe a The reaction turning yellow would be indicative of an acidic solution when mixed with BTB. Please please please show all the work 6. test this material f or the presence of sodium bicarbonate? Combustion occurred. When, 10. 7. flame, then turned into Cooking tomatoes to make tomato sauce no reaction after that. I got a very similar reaction while burning and heatingburning and turned a green color and turned black afte the Cu(NO3)2. This would indicate that it is acidic. 2. 3. 0000006566 00000 n b. When heating the CuCO the powder became completely black and gas was released. Na2CO3 Sodium 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 . Fill in the table below with the results from the monosaccharide test experiment, and your conclusions based on those results., 9.

Decorative Pillow Companies, Articles D