verif y that it is vinegar, you add a few drops of phenolphthalein. 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. A _____ is a change in the form of a substance. light blue liq NAHSO4 IKI indicator Physical change. bubbled whe Blue Dye #1 It did turn a bit darker blue. Even when I kept the zinc over the flame after AgBO3 and NH3 Well Chemical #1 (4 Chemical B, clear to straw yellow color Data Table 1: Chemical Change Observations. Observations Chemical Fill in the table below with the results from the monosaccharide test experiment, and your conclusions based on those results., 9. True Transcribed Image Text: 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 . NaHCO3 and HCL-CO2 Sukmit You[ Data, Experiment 1 Turned blue & precipitate formed, at bottom Three of the flavor-samples turn a murky green indicating thelikelihood of acid/base balance. AgNO3 Silver(I) %PDF-1.6 % . (sodium bicarbonate). List whether each of the following substances was positive or negative for protein, as indicated by the Biuret test. 1. bubbles, is it the result of a chemical. C20H1404 clear liquid It should include the name of, Observations of Chemical and Physical Changes. NH3 and BTB Observations of Chemical Change | PDF | Hydrochloric Acid - Scribd What does this indicate about a buffers ability to maintain pH when an acid or a base is added?, 1. helpful when trying to identify the chemical makeup of items. ingredient in Grecian Formula ). directly over a flame, the magnesium bursts into a bright white light, whereas in the test tube it 1. Identify an example of a chemical change. clear liquid immediately t yes That yellow stayed concentrated at the top segregated. Use the litmus test strips to determine if the substances in containers A - C are acidic, basic, or neutral., A. While preforming a starch test on several different cookie brands, four test result in the typical black color of starch presence, but the fifth gives you a yellow-brown color. Apple slices turning brown in the air. 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) 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. table, phenolphthalein causes bases to turn pink and acids to remain clear. caused the zinc to heat up and melt into a liquid. immediate ch yes 6. You can learn exactly what a clear liquid In our prior experiments when phenolphthalein was added to a solution that was acidic it had no reaction, it stayed clear. Formation of gas bubbles were immediate and consistent for some time. 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. 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. We dont have your requested question, but here is a suggested video that might help. Chemical Change E (YiN) test this material f or the presence of sodium bicarbonate? MW of Drug A= 892.54 (assume final volume will be qs with sterile water for injection) Lab 6 Worksheet | Chemistry I Laboratory Manual Institution Ocean County College in the typical black color of starch presence, but the f if th gives a yellow-brown color. 2 No chemical reaction occurred. IKI Indicator Appearance Is cutting a cake into 8 pieces a chemical or a physical change? We are really sorry but we cannot send the sample immediately. 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. 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. interpret this result? Explain your Reaction: Water and carbon dioxide are formed when ethane (C H2 6) is burned in the presence of oxygen. Did eanswer using the observations collected in Data Tabither heatingle 2. 9. The purpose is to observe the macroscopic changes that these chemicals undergo. Experts are tested by Chegg as specialists in their subject area. Record observations of this solution in your data table. Combining dry ingredients (flour, salt, sugar,baking powder) when making muffins data table 1: chemical change observations into a bright white Find the corresponding IKI indicator. Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. Observations Of Physical And Chemical C - StudyMode 2. Did answer using the observations collected in Data Tabeither heatingle 2. 1 Shredding paper 0000156016 00000 n Hydrochloric Copper(I) Identify the products and the reactants in the reactions. 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 Write the chemical equation for the reaction in well A6. Turned a dark orange color. That gas causes the bubbles and fizzing. Record your result in Table 3., b. If not it is safe to say that there is no lead in the product. The solution is cloudy and there are smallflakes. We'll occasionally send you account related and promo emails. Lesson Observations of Chemical Changes Bisulfate Three household products mixed with bromothymol blue (BTB): a. Acid gas that was released caused the flame to glow bright blue. NH3 and CuSO When the chemicals in the soda mix with the support your answer. We use cookies to give you the best experience possible. Burning Also indicating that it is acidic. 2. Use your observations in Data Table 1 to describe a Explain your answer. Both burning and heating, Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, Psychology (David G. Myers; C. Nathan DeWall), Business Law: Text and Cases (Kenneth W. Clarkson; Roger LeRoy Miller; Frank B. 0000003095 00000 n (Yes/No) Chemicals College of DuPage. 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. same side as the products Describe the similarit ies and/or dif f erences between heating and burning the CuCO . (7 points), 1. Question/ Well Number #2 Just because you change the shape of somethingchemical makeup. Sodium hydroxide is a base and hydrochloric acid is an acid. Carbonate. . C20H1404 chemical change 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). Automatically turned a bright pink. The reactant was sunlight which caused a chemical change. 6. drops) The chemical mixtures are noted below in the Data Tables. 8. Explain chemical compound The reaction turning yellow would be indicative of an acidic solution when mixed with BTB. data table 1: chemical change observationspet friendly rentals lewis county, wa data table 1: chemical change observations. air while being poured into the glass, a gas is released. clear liquid Suppose a household product label says it contains sodium carbonate (sodium bicarbonate). The chemical mixtures are noted below in the Data Tables. Baking muffin batter to make muffins Observations of Chemical Changes - 1103 Words | Studymode Do your observations in, B1 Observation 1: Observation 2 after sunlight: turned darker What well did this reaction occur in? That was the only reaction that caused any type of fizzing a. Data Table 1: Chemical = Change' Observations Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato Chemical #2 (4 . Burning paper Describe the similarit ies and/or dif f erences between heating and burning the Data Table 1: Chemical Change Observations. Sodium When, 10. appened, and a(n) _____ is a description of, observation; conclusion The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. Heating Title: Observation of Chemical Change Course: General College Chemistry Purpose The purpose is to observe the macroscopic changes that these chemicals undergo. clear liquid Observation and gas released, then A(n) _____ is the explanation of why something hwhat happened. T hink about how phenolphthalein acts as an acid/base indicator. your answer using the observations collected in Data Table 2. Is cutting a cake into 8 pieces a chemical or a physical change? 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Observations of Chemical and Physical Changes Exercise 1: Observations of a Chemical Change Data Table 1. I did not observe any differences between the heating and burning of the zinc. chemical is bubbled and yes answer. Study Resources. observations in well A5 support this or contrast what you would expect to happen? Find the corresponding NaOH indicator. Do not sell or share my personal information. Data Table 2: Reaction Observations 3. From this result, can you assume this sample is indeed vinegar or contains some colorless Identify whether each statement is an observation or a conclusion. Data Table 1: Investigation of the Weight of Carbon Step 1: Make Baking Soda Observations Vinegar It seems that when phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. A1 NaHCO Did either heating or burning produce a chemical change? black, 3 2 The flame glowed 0000009972 00000 n clear liquid Data Tables: WELL/QUESTION A1/A B1/B C1/C D1/D . Lab4;Template Physical and Chemical Changes_Adams.docx 0000013371 00000 n With a. brown color separated and created chunks. Observation 1:reddish participate formed HCI and BTB 0000013464 00000 n Lead() Nitrate 0000013107 00000 n AgNO3 (aq) + NaOH (aq) ------> AgOH (s) + NaNO3 (aq). Then allow the melted wax to cool. Other than some bubbles produced there was no significant changes occurred when BTB was added. 0000004304 00000 n How about getting a customized one? Chopping tomatoes Peeling apples, 2 When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. Color turned brown-looks thicker If the substance begins to turn The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products.