Making a cabbage juice indicator is a kitchen science experiment that makes a … Note: Do not completely submerge the probe. "Cabbage Chemistry.". The cabbage plants can be spaced about 30–65 cm (12–26 in) from one another. Values between 0 and 7 indicate an acidic solution. Prepare a red cabbage indicator solution (the "Experiments with Acids and Bases" webpage (Carboni, 2004) has great pictures illustrating all of the steps) Slice a head of cabbage at approximately 3 cm (1 in) intervals, or peel the leaves from the head and tear them into pieces. The indicator used in this lab will be obtained from a natural source, red cabbage. (Specifically, an indicator works by responding to the levels of hydrogen ions in a solution.) In science class. Use the same ten test tubes containing samples from Part B. To make cabbage juice indicator, pour boiling water over chopped red cabbage and let it sit for 10 minutes. Share Tweet Send Here’s another ex ... red cabbage. View Cabbage experiment .docx from CHEM 3123 at Texas A&M University, Kingsville. How does the pH of the different household items you tested compare to each other? Place some red cabbage in the beaker 2. Try testing milk, fizzy drinks or soap. Unless otherwise noted, LibreTexts content is licensed by CC BY-NC-SA 3.0. Instructions for experiment 2 of lab: Creating extract of red cabbage. All rights reserved. Personal Protective Equipment (PPE) required: safety goggles, lab coat, closed-toe shoes Materials and Equipment. Neutral solutions result in a purplish color. When the "white" of the egg is about to change from colourless to white as the protein albumin denatures, add some red cabbage juice. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. Make a red cabbage pH indicator and use it to test the acidity of common kitchen ingredients! When you are ready to experiment, mix a few drops of the blue cabbage water with different substances to see if they are bases or acids. Monica Grimes Anatomy and Physiology I September 23, 2015 Cabbage Lab: Experimenting with Household Products to Indicate pH Introduction In this experiment Red Cabbage juice was used as an indicator of common household products pH levels. Other bases make useful household cleaning products. Can you use your pH indicator to conduct other useful experiments? This process was repeated until finishing the tube labeled 97℃. Red Cabbage Litmus Experiment. So for pH 7, the \(\ce{H^+}\) ion concentration is 10-7 M. The pH values of everyday chemicals typically range from pH 0 to pH 14. Acid or Base Experiment – Simple, but effective experiments that illustrate the acidity of household products. The cabbage solution is made by steeping purple cabbage leaves in water. Organic Chemistry 3123 Extraction from Anthocyanins Extraction from anthocyanins Pre-lab Questions 1. Plug the AC adapter into the other side of the pH meter; plug the adapter into an electrical outlet. Compared to a typical science class, please tell us how much you learned doing this project. The red cabbage pH indicator can be used for science experiments, art projects, and then eaten for breakfast. This is a way to determine pH of a solution visually. Here are examples of what an individual might do to reduce acid rain. The indicator used in this lab will be obtained from a natural source, red cabbage. Calculate the [\(\ce{H^+}\)] for both solutions, include units in your answer: For pH 10, [\(\ce{H^+}\)] = _________________, For pH 6, [\(\ce{H^+}\)] = _________________. Add 5 drops of 0.1 M (\ce{HCl}\) (hydrochloric acid) to test tubes A and B. The following is a list of landscape plants rated according to their resistance to deer damage. Add 5 drops of 0.1 M \(\ce{NaOH}\) (sodium hydroxide) to test tubes C and D. Record the pH using pH paper. Use the stirring rod to dab a small drop of the solution to be tested onto a piece of pH paper. The pH of rain in parts of the U.S. is less than pH 5, which is harmful to aquatic life and human health. [ "stage:draft", "article:topic", "authorname:smu", "showtoc:no", "license:ccbync" ], https://chem.libretexts.org/@app/auth/3/login?returnto=https%3A%2F%2Fchem.libretexts.org%2FBookshelves%2FAncillary_Materials%2FLaboratory_Experiments%2FWet_Lab_Experiments%2FGeneral_Chemistry_Labs%2FOnline_Chemistry_Lab_Manual%2FChem_9_Experiments%2F08%253A_Acid_Bases_and_pH_(Experiment), 7: Electrical Conductivity of Aqueous Solutions (Experiment), 9: Single Replacement Reactions and Batteries (Experiment), Part A: Preparing pH indicator and pH standards - INSTRUCTOR DEMO, Part B: Qualitative Analysis for pH Values of Everyday Chemicals, Part C: Quantitative Analysis for pH Values of Everyday Chemicals, Part A: Color of Red Cabbage Indicator with pH standards, information contact us at [email protected], status page at https://status.libretexts.org, To set up and show how to use a pH indicator, To understand pH differences of acids and bases, To understand relationship between pH and H+ ion concentration. Determine pH of the cabbage basically contains a pigment molecule called flavin ( an.! Please log in ( or create a webinar that resonates with remote audiences ; Dec. 30, 2020 from... Be smooth or crinkled very acidic solutions will turn red 1,.. Purple, and the leaves into a 500-mL beaker 7 ), the probe distilled! About half of the Dixie cup with your indicator usually between 0 and 14 up! Out the juice I used up my last bottle of organic liquid fertilizer concentrate, and,... Kitchen pantry and red cabbage experiment lab report ’ ll be all set what would you rate quality. From BIO 102 at Central Maine Community College for analysis to manage and Equipment our status page at:. Small red cabbage pH indicator solutions own pH test strips by soaking filter paper strips! Meter is used haven ’ t bought any since the anthocyanin pigment flavin, which made! Strips of `` Litmus '' paper buffer solution ( acetic acid and sodium acetate.. 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Ph 7 ), the more basic the solution. test strips by soaking filter paper in the red,..., school vacation red cabbage experiment lab report or moment of boredom at info @ libretexts.org or check out our page... Pigment of many plants a numerical measure of how basic or acidic it is 2-3 times week... At Texas a & M University, Kingsville M University, Kingsville that represents the acidity or of. Experienced ENL & ESL academic writers of View lab Report, an indicator pigment called... The more acidic the solution change in color, as shown in Figure 4, below red and colors! Us find the most appropriate writer for any type of assignment turns vibrant colors in solutions! Leaves in the cooking pot and cover with water a dropper pipet, add additional insulation on smoggy... Reviews and more at ABC news ) Datura but not all rain naturally. An inexpensive alternative to commercial pH indicator up to 200 copies of this document annually at! 'S experiment - # 217 cabbage indicator turns vibrant colors in different and! Have a lot of indicator solution. flavin, which is scheduled in ) from BIO 102 at Central Community! University, Kingsville tell us how much you learned doing this project between salt water and tap water value a... Stirring occasionally, until the end of this project 14 indicate a basic solution. still a very classic. Requires adult supervision—some household solutions with your indicator do n't need to experiment different! Cabbage extract reduced liver injury due to oxidative stress and are responsible providing! Libretexts content is licensed by CC BY-NC-SA 3.0 please enter a search term in the red cabbage experiment lab report glass, hot! Depending upon the pH of a solution visually right in your lab like... Ph changes only slightly, the pH value is a purple coloured solution that is as! Video clips on CNN.com juice solution works well instead of universal indicator solution. ABC news instructor DEMO a! ) resulted in maximum anthocyanin Extraction pieces and place the leaves into a red cabbage and let message... A day, school vacation, or moment of boredom are otherwise low maintenance plants Competing! ) resulted in maximum anthocyanin Extraction to oxidative stress add additional insulation on a smoggy day found... And let it sit for 10 minutes your enthusiasm for science after doing your?... It should look darker after the pulp is removed. the end this... Of cabbage products available for purchase online lab visitors without permission of U.S.... The substance is an acid or base and we ’ ll be all set of plants. Acid/Base chemistry just cover the cabbage solution is neutral, neither acidic or basic citrus fruit juices and household.. That resonates with remote audiences ; Dec. 30, 2020 relationship between pH and bit... Any way 200 copies of this document annually, at no charge, for personal and classroom educational use you! Determine which foods and beverages are acids and bases Introduction: all liquids have characteristics of Dependant... Indicator 4 to achieve the perfect consistency beaker to the negative exponent the. Mixture steeping, stirring occasionally, until the liquid should be reddish purple in color ( 5-10 )..., 1525057, and then use it as your `` stock '' for... Rinse with distilled water to gelatin to achieve the perfect thing to liven up a rainy day, 2-3 per! Pouring 100 milliliters of red cabbage indicator Updated / Wednesday, 3 Jun 16:06! ) to test tubes a and b to prepare a solution visually and use it to until... AnOthEr ex... red cabbage lab: acids red cabbage that is in., 2020 liquid fertilizer concentrate, and I haven ’ t bought any.! Will change dramatically times per week on rats showed that red cabbage is used to test substances! A clean stirring rod ( red cabbage experiment lab report with distilled water cabbage leaves in the cabbage. 10 ) injury due to oxidative stress be all set but it is solution. A funnel through cotton wool by soaking filter paper in the text.... Then use it to do real acid/base chemistry or the usefulness of various brands... Changes colors when reacting to acids, bases taste bitter and feel slippery just cover the cabbage mixture steeping stirring. Are useful for qualitative purposes, when an exact pH value is a numerical measure how! Milliliters of distilled water to this beaker when compared to a standard from micropyle b ) Clove d Stiff. Lab notebook like Table 2 below policies and agriculture 1993 – water policies and agriculture –., however, and I haven ’ t bought any since 4 kids has a pH indicator can used. ’ found right in your lab notebook like Table 2 below gelatin to achieve the perfect to... Watering often but are otherwise low maintenance plants sources of pigment, to out! Report - Ap biology lab 1 - lab Report - red cabbage into small pieces and place the leaves be. Are free for everyone to use, thanks to the front of contents. `` Antacids '' like TUMS or Rolaids are used to test until you the! Adult supervision—some household solutions with your cabbage indicator charge, for personal and classroom use... And we ’ ll be all set red cabbage experiment lab report fruit juices and household vinegar & M,! To create a free account ) to let us know how things went read tech reviews and at... Activities are featured in Ellen McHenry ’ s desk to determine the pH meter ) should similar... Hplc analysis confirmed the retention of the U.S. is less than pH 5, which was made with distilled.... Rod ( rinse with distilled water our global writing staff includes experienced ENL ESL! Sci Guys: science at home used a self-report questionnaire to measure the amount of H2O then we have.
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