The red cabbage, scientific name: Brassica oleracea var. capitata f. rubra, is also known as purple cabbage. The cabbage is known by this name due to its dark red/purple leaves. It can be found in China, Northern Europe and throughout America. The red cabbage needs sufficient humidity and fertilised soil for it to grow. Red cabbages are planted in spring and harvested in the autumn. This plant changes colour according to the pH level of the soil; the plant contains a pigment flavin (anthocyanins). If the soil is acidic, the plant leaves will be reddish; an alkaline soil will make the plant leaves a green-yellow colour and a neutral soil will make the plant leaves purple. The juice of the purple cabbage can be used as a home-made pH indicator. Acidic solutions have more hydrogen (H+) ions therefore they can donate more H+ ions; whereas basic solutions have less H+ ions and they accept the ions, neutral solutions have an equal amount of H+ ions and HCl- ions (Hoefnagels 2012).
The purple liquid indicator will change colour according to the varying pH levels of different acidic and basic/alkaline solutions.
To determine the pH levels in acids and bases of household solutions/powders.
Three cups of cabbage was chopped into small pieces using a knife. Once the cabbage was chopped, it was then placed in a big, clear glass dish. Tap water was put on to boil in a kettle; once boiled, the water was then poured over the cabbage in the glass dish till all the cabbage was covered. The boiled water and cabbage were left to stand for 10 minutes until the water from the cabbage turned purple. The cabbage pieces were strained using a strainer in order to obtain the indicator. Eight clear glass cups were filled with 60 ml each of the red cabbage ...
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...cessities in our life because it can be used to balance and protect our bodies, it is used in various foods and it can be used as cleaning materials. If a child swallows a harmful acid such as Hydrochloric acid (HCl), an emergency medical care number must be called immediately and the child must be given milk if no symptoms such as vomiting or convulsion is shown. If no symptoms are showing, the water or milk will help to bring the body’s pH back to a manageable level.
The colour of the acidic solution turned a reddish-pink indicating a low pH whereas the colour of the alkaline solution turned blue-green indicating a high pH, the colour of the solution with an addition of water remained the same, and therefore the hypothesis is supported. The experiment can be improved by using pH strips to get the actual pH value thus allowing the experiment to be more accurate.
...ost likely to be battery acid. If it is water, it has a Ph level of around 7. For vinegar, the Ph level is approximately 2.4 - 3.4. Thus, once testing the liquid compare it with the Ph levels above to discover the mystery solution.
In the pH homeostasis lab, 6 experiments were conducted. The hypotheses were: If base is added to water then the pH will increase; If acid is added to water then the pH will decrease; If base is added to homogenate, then the pH will increase; If acid is added to homogenate, then the pH will decrease; If acid or base is added to buffer, then the pH will remain the same. After the experiments were conducted, the graphs were somewhat similar to the hypotheses.
...ositive connotations that Grok associates with purple are “Intelligence and creativity” (Grok). I am intelligent because I believe myself to be a hardworking and determined student. I have all A’s, well except for Algebra, but grades aren’t the only thing that intelligence is based on, right? Growing up with my mother being a painter and my father being a graphic designer I originate from a very artistic family. I express my creativity in many diverse ways. I fancy writing, photography, and decorating my room in my own style. Most of all I think I am highly creative when it comes to the way I dress. Fashion has always been a tremendous part of my life, that’s why that moving to New York City and working in the fashion industry is my green light. The color purple is a mix of blue and red, like the mixture of excitement and calmness, which overall describes me.
Cultures are becoming obsessed with pumpkin spice flavors because it’s just a good flavor. Other reasons why people are obsessed because it’s a newer thing. I really don’t know why everybody likes it I guess just because it’s good. I mean how could you pass up a pumpkin spice latte or pumpkin spice Pringles, pumpkin spice doughnuts or anything like that. People also like pumpkin spice latte because it’s caffeine. The Pumpkin Spice Latte is a coffee drink made with a mix of traditional fall spice flavors.
Literary Analysis “He knew his father yelled now and then, but usually he yelled for a good reason, and all he had done was hold on to the carrot sticks. He was sure he had held them at dinner before.” -Adam Bagdasarian. This quote from “Carrots” is an excellent example of what the boy feels in the two short stories, “My Side of the Story” and “Carrots”. Not many people think of anger as a serious issue and relate it to being a common part of nature.
...for the original titration, shown in Table 5. This could be due to perhaps usage of the wrong indicator, or of not stopping the titration exactly when the color changed.
I watched the movie called Bitter Seeds in my environmental class. The movie talked about the problems in India about farming. The movie also talked about the suicide rate, how high it is compared to our country. It said that every 30 minutes, a farmer commits suicide. In India, the economy is not that great so they went with the seeds that were more expensive. The culture is completely different from ours, they celebrate Pola, which is the bull festival, they do rituals when something bad is happening. Most of the seeds were rotting and they were not getting enough water, which resulted in the seeds not germinating, eventually the plants died out and the farmers killed themselves. The people who were selling the seeds wanted more money than what it really should have cost. Banks rarely loan people any money, they had to go to a Loan shark. Loan sharks were basically thugs because they would charge the people 7% to 10% interest per month to grow seven acres. I think Indian farmers should be able to get loans from the bank at a higher percentage rate so they won't have to go to loan sharks and get ripped off.
Four solutions were tested an out of the four only one had a color change, meaning that it had alcohol present. This solution was methanol and of course it would produce a color change because methanol is an alcohol. One solution that should have changed color was solution 4, the base-hydrolyzed aspartame, but it did not produce a color change when aqueous ceric ammonium nitrate reagent. Water and fresh aqueous aspartame are not going to produce a color change because there is no alcohol group in there structure.
Some improvements to the experiment might be using Na Acetate or Na Citrate as buffers instead of KHPO4. The pH ranges are 4.5-5.5 and 4.7-5.5, respectively. This range falls closer to the ideal pH of 5, then KHPO4 (pH
As more NaOH is added, the pH will become more basic as H2C2O4 .2H2O has been completely neutralized and now an excess of OH- ions are present in the solution.12
The point was signaled by a change in color of an indicator that had been added to the acid solution. Indicator is a substance that has distinctly different colors in acidic and basic media. Phenolphthalein was a common indicator which was colorless in acidic and neutral solutions, but reddish pink was result in basic solutions. Strong acid (containing H+ ion) and strong base ( containing OH ) were 100% ionized in water and they were all strong electrolytes.
Dichlorophenolindolphenol or DCPIP is a blue substance which acts as an indicator. It changes from blue to red with acids but loses its colour in the presence of certain chemicals, one of which is vitamin C. DCPIP solution can be used to test for the presence of vitamin C in foods.
Additional credit is given...for their contributions from the dorm tap water, and the house tap water. Also, for their data given from the same lab procedure.
The objective of this lab is to determine the present of normal and abnormal constituents in the urine, also to examine the pH, specific gravity, and chemical constituents.
Would you enjoy having fresh, delicious, luscious vegetables to eat all summer long that cost you almost nothing? I know I would. Well, now you can have your veggies and eat them too. Try building your own vegetable garden. It can fit all sizes of yards and decks. You just need to pick the location and type of garden. Next, you will prepare the garden site and work the soil. Finally, you will plan the specifics and plant your garden. With some care and patience, you will be enjoying the fruits of your labor in no time.