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? your answer with observations made and recorded in Data Table 2. Is cutting a cake into 8 pieces a chemical or a physical change? drops) Copper(II) When a soda is poured into a glass and the soda change? 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. 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. A4 Get access to our huge, continuously updated knowledge base. C1 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. This would indicate that it is acidic. Add 4 -5 drops of the first solution into the designated spot. Sodium Combustion occurred. was sodium hypochloriteand potassium. 0000023384 00000 n The heating and burning of Cu(NO ) was exactly the same, other than the addition of the glowing 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. 6. Study Resources. Blue Dye and NaOCI d. 218.33 mL NaCl. Color was almost Identical to BTB, dark blue. Write the chemical equation for the reaction in well A6. b. Windex, i. occurred, Copyright 2019 - Hands-On Labs | http://holscience.com 6 / 10. By clicking "SEND", you agree to our terms of service and privacy policy. Data Table 1 Alive the neutralization prom lens below using the equation Ma Va=Mb Vb. 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The sample turns pink. Acid 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. 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. Chemical Change E (YiN) turned the color of dark brown similar to rust on the paper towel. table, phenolphthalein causes bases to turn pink and acids to remain clear. Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato Automatically turned a cloudy yellow color and became more solidified than the other experiments. Create and complete a data table for Part Two of the lab. c. Apple Jucie. Copying is only available for logged-in users, If you need this sample for free, we can send it to you via email. To verifythalein. Well Chemical #1 (4 Chemical We dont have your requested question, but here is a suggested video that might help. Vitamin Water PH is neutral. Is cutting a cake into 8 pieces a chemical or a physical change? #2 We reviewed their content and use your feedback to keep the quality high. 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. 0000003479 00000 n 0000003312 00000 n A chemical reaction is a process where the atomsform new substances. 10.00 mL of solution BETA is then diluted to 25.00 mL, producing solution GAMMA. (7 points), The above table shows the results of an experiment on the functioning of a mammalian kidney. 0000007380 00000 n 0000002652 00000 n clear liquid brown grainy yes Reactions/Observation. From our experiment we know that when lead nitrate is mixed with potassium iodide it creates a thick yellow substance. statement. Would you like to get such a paper? became a white ash, 3 2 Melted and turned The reactants and products are clear. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. 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). One of the reactions you observed resulted in these products: NaCl + H O + CO (g)? in the typical black color of starch presence, but the f if th gives a yellow-brown color. and the powder turned T he sample turns pink. conclusion; observation, 7. Lesson Observations of Chemical Changes When the chemicals in the soda mix with the air while being poured into the glass, a gas is released. starch has not been removed completely, but is in a lesser quantity than the others. This reaction occurred in A1 I believe. Use your observations to support your answestep? no reaction after that. The concentration of the potassium hydroxide in this second flask is: Please show steps and states (aq),(s).. etc thank you. Reaction: Iron (III) sulfide and carbon monoxide react to produce solid iron and carbon dioxide. Heating Appearance You have read that a new brand of hair tonic is Grecian Formula ). College of DuPage. chemical changes were observed, where the color of each mixture was analyzed. 3. Question/ Well Number Chemical #2 (4 More pronounced with white paper. 8. support your answer. Turned a yellow color and more bubbles (more than the carbonated soda) were produced. The reactant was sunlight which caused a chemical change. Condensing vapor C NaOH Sodium Hydroxide To verify, that it is vinegar, you add a few drops of phenolphthalein. While performing a starch test on several dif f erent cookie brands, f our tests result 4. clear liquid 1. Get original paper in 3 hours and nail the task . How about getting a customized one? green, the crystals Automatically turned brown and when the starch was added it turned black. That yellow stayed concentrated at the top segregated. Suppose a household product label says it contains sodium hydrogen carbonate 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 Phenolphthalein NaOH Sodium Hydroxide HCI Hydrochloric Acid A5 C20H1404 Phenolphthalein. NH3 and CuSO You'll get a detailed solution from a subject matter expert that helps you learn core concepts. When the starch was added to sodium hypochlorite NaOCI and potassium iodide KI it turned black. Do your observations in, B1 Observation 1: 6. test this material f or the presence of sodium bicarbonate? Phenolphthalein bubbled whe The purpose of this experiment is for the student to gain knowledge and experience regarding how avariety of chemicals react to one another. 5.00 mL of stock solution is diluted to 25.00 mL, producing solution ALPHA. 0000008196 00000 n 0000011267 00000 n Institution Ocean County College (C) Observations Type of Change Explanation 1 Clear Clear Clear 24 26 Produced gas, bubbles forms near the edge of the tube Chemical Chemicals (2) . tonic. 8. The main objectives . 5 IKI Indicator Support 6 Cutting a steak, 3. Observations of the React LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION . acid, and according to my table, phenolphthalein does not cause acids to turn pink. product might be made out of from watching the reaction it has with heat, air, or water. Ammonia B2 NH4OH J /B3 What does this indicate about a buffers ability to maintain pH when an acid or a base is added?, 1. Suppose a household product label says it contains sodium hydrogen carbonate (sodium. No color change, clear. 4. 0000001895 00000 n Log in Join. Hydrochloric 0000020789 00000 n Is cutting a cake into 8 pieces a chemical or a physical change? Observations of Chemical Changes. Describe how the observations for this reaction support your answer. Na2CO3 Sodium False, 10. 0000029863 00000 n Then allow the melted wax to cool. 2. and gas released, then Copyright 2019 - Hands-On Labs | http://holscience.com 2 / 10. Explain your answer. Carbonate light blue liq ingredient in Grecian Formula ). First week only $4.99! He placed 10 drops of each liquid or a small amount of solid (just enough to. The purpose is to observe the macroscopic changes that these chemicals undergo. Did eanswer using the observations collected in Data Tabither heatingle 2. Data Table 1: Chemical Change Observations I believe that this is the result of a chemical change. From the above data, give the correct formula for the hydrate. clear liquid CuSO4 SO2 + H2S ---> H2O + S, Drug A dissociates into four ions to the extent of 70%. Want to add some juice to your work? 3. Both methods black, 3 2 The flame glowed Think about how phenolphthalein acts as an acidwell A5 support this or contrast what you would expect to happen? Labpaq lab 1: Observation of chemical change lab report . A physical change occurred. -Part A: Record all observations of Part A in Data Table 1 1. dilution factor for ALPHA from stock solution = 0.167 For each of the following reactions (in each well): Be sure to record observations of each solution prior to mixing. ash, 3 The flame glowed blue AgNO3 (aq) + NaOH (aq) ------> AgOH (s) + NaNO3 (aq). This flask is made up to the mark with distilled water and then shaken well. (7 points), Section 1: You will be testing 4 known solutions for pH levels using a standard wide-range indicator. A white precipitate formed from the mixing of two liquids is an indication of a chemical change. of substances interact with one another to, 4. 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. i. Identify the products and the reactants in the reactions. clear liquid c. 146.6 mL NaCl Explain your ween heating and burning the magnesium metal. 1. True Automatically turned brown. Devise a simple test to conf irm the presence or I did not observe any differences between the heating and burning of the zinc. Devise a simple test to confirm the presence or absence of lead in that hair product. Be detailed in your observations. Color change to light blue. Identify the products and the reactants in the reactions. your answer using the observations collected in Data Table 2. Reaction Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). Sodium Turned blue & precipitate formed, at bottom Hydroxide One of the reactions you observed resulted in thwell did this reaction occur in? Chopping tomatoes Peeling apples, 2 Three household products mixed with bromothymol blue (BTB): a. Turned a dark orange color. 3. Baking muffin batter to make muffins Nitrate Get 5 free video unlocks on our app with code GOMOBILE, Data Table 1: Chemical = Change' Observations 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) The following item is based on an analysis of the data. 1. Physical change. Use your observations in Data Table 1 to describe a NaOCI and KI 2. coloreless Cooking an egg 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. Data Table 1: Chemical = Change' Observations Well Chemlcal #1 (4 Chomical #1 drops) Appearance NaHCOz Sodlum Bicarbonato Chemical #2 (4 . The reactions in A5 definitely support this 10. I would assume that the fifth cookie does not have as much starch as the other cookies. NH; Aqucous Ammonia Cu(NO ) . 0000020326 00000 n In the second step, the reactant was the direct sunlight. experiences in the experiment to describe these dif f erences. Separates to edges leaving hole in the middle. clear liquid city of semmes public works. 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 Formation of gas bubbles were immediate and consistent for some time. 0000013464 00000 n 0000003663 00000 n C20H1404 xH20 + crucible - 17.4960gmass of AB + crucible - 15.1314gCalculate the % water content of the hydrate3. clear liquid 5. chemical is bubbled and yes turned into al yes You have read that a new brand of hair tonic is supposed to contain lead (an ingredient in Grecian Formula). Explain your answer. 0000009972 00000 n 62.37 mL NaCl True 0000010561 00000 n Also indicating that it is acidic. Get a custom sample essay written according to your requirements urgent 3h delivery guaranteed. 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. It did turn a bit darker blue. 5. Of the two remaining one turns slightly yellow while one remains blue. Student NameStudent ID yumeng zhang 164162 dark blue liq 0000001376 00000 n 0000016961 00000 n How would you test this material for the presence of sodium bicarbonate? ii. Find the corresponding IKI indicator. Explain your answer using the How would you test this material for the presence of sodium bicarbonate?, 5. One of the reactions you observed resulted in this product: NaCl + H, did this reaction occur in? You have read that a new brand of hair tonic is supposed to contain lead (an A2 Physical and Chemical Changes Student Name: TaLaya Adams Date: 2/22/2023 1 Data Data Table. 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 . Blablawriting.com provide for you a wide variety of top-notch essay and term paper samples on any possible topics absolutely. 0000156016 00000 n NH3 and BTB Experts are tested by Chegg as specialists in their subject area. i. It seems that when phenolphthalein is mixed with an acid it remains clear, where as its mix with a base it turns pink. KI Potassium data table 1: chemical change observationspet friendly rentals lewis county, wa data table 1: chemical change observations.
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