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Ph determination

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Rebeca Navarro

This is an experiment to calculate the PH of food by natural forms like red cabbage. In this ppt we show what is the best form to make the cabbage juice to measure the PH (POTENTIAL HYDROGEN).

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Ph determination Rebeca Navarro Abigail Guevara Michaela Dobronski
Natural vs fabric
Materials Red Cabbage Different soaps A mortar or a blender Alcohol Water Pot pH meter
Ph determination
Objective By a serious of diferent steps we will determine what is the best form to make the cabbage juice and to calculate the level of PH(potential hidrogen ) of the food, garden and others utilities of the scale of PH.
Variables Manipulated: making juice of cabbage of different forms. Put it on the soaps Resulting: what is the best form to make the cabbage juice. The color of the soap and concentration according to the intensity of cabbage juice.
One example of Alkaline vs acid in our body Stomach acid: the parietal cells of the stomach secrete hydrochloric acid that bring the stomach pH to a range of approximately 1.5 to 3.0.: Pancreatic juices is alkaline and they are found in our body to reduce the acid of gastric juices. This happens because it have a concentration of bicarbonate ions.
Ph determination
Forms to make the liquid to measure the PH Home made 1.-Boil water with purple cabbage 2.-Crush the cabbage with alcohol 3.-Let it rest for 5 hours Laboratories made 4.- PH measure
Number 1 BOIL WATER FORM : Cut the red cabbage leaves Put it in water and heat until is boiled Separate the cabbage and the water Let it cool
Ph determination
Number 2 Crush the cabbage with alcohol Cut some leaves of the cabbage Put alcohol in a bowl Mix the leave and alcohol Use a blender or a mortar to crash them Take out the leaves of the cabbage
Ph determination
Number 3 Let it rest for 5 hours: Cut the cabbage leaves and put it on a bowl Pour some water Let it rest for 5 hours We call this technic the five hours method
Ph determination
Ph meter https://www.youtube.com/watch?v=Zw2Zs5DeWMs We will use a fabric made PH band
Test of cabbage use
We will use this ph scale If it is alkaline is good for the skin but if it is acid it is bad depending the part of the body.
Number 5
Number 9
Number 10
Almost neutral
NUMBER 9
Almost neutral Conditioner for horses
Number 11
Some how neutral
Why red cabbage can detect the PH??? The purple cabbage has anthocyanin that are found in pigments. When we boil, crash or let it rest the water we liberated pigments of the cabbage and that rebelled PH The color change is due to a structural change induced by protonation or deprotonation of the species.
Conclusion and results
Results The 5 hours method is the one who reveal PH. we let it rest work very good because it have more intensity of the color and this helps us with our experiment and give us more clues.
Conclusion There are many forms to do this experiment. If you want to make it home made, use number 3. This liberate more the pigments reveling better the potential hydrogen. We comprobe this because in the same product is was more intense the color than the other forms
Besides The best soap was number 4 because is was made for babys and the care of skin. The worst one was DEJA number 1 that have a weak acid level, but still acid. The acid will dry your hands. We recomend you to dont use dust soaps because they are bad for your skin.
Opinion With this experiment we learn how to do a measure the ph in a natural form. We learn that not all the soaps are good. This was interesting because we bring something that can only be made in laboratories and we made It in our houses.

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Ph determination

  • 1. Ph determination Rebeca Navarro Abigail Guevara Michaela Dobronski
  • 3. Materials Red Cabbage Different soaps A mortar or a blender Alcohol Water Pot pH meter
  • 5. Objective By a serious of diferent steps we will determine what is the best form to make the cabbage juice and to calculate the level of PH(potential hidrogen ) of the food, garden and others utilities of the scale of PH.
  • 6. Variables Manipulated: making juice of cabbage of different forms. Put it on the soaps Resulting: what is the best form to make the cabbage juice. The color of the soap and concentration according to the intensity of cabbage juice.
  • 7. One example of Alkaline vs acid in our body Stomach acid: the parietal cells of the stomach secrete hydrochloric acid that bring the stomach pH to a range of approximately 1.5 to 3.0.: Pancreatic juices is alkaline and they are found in our body to reduce the acid of gastric juices. This happens because it have a concentration of bicarbonate ions.
  • 9. Forms to make the liquid to measure the PH Home made 1.-Boil water with purple cabbage 2.-Crush the cabbage with alcohol 3.-Let it rest for 5 hours Laboratories made 4.- PH measure
  • 10. Number 1 BOIL WATER FORM : Cut the red cabbage leaves Put it in water and heat until is boiled Separate the cabbage and the water Let it cool
  • 12. Number 2 Crush the cabbage with alcohol Cut some leaves of the cabbage Put alcohol in a bowl Mix the leave and alcohol Use a blender or a mortar to crash them Take out the leaves of the cabbage
  • 14. Number 3 Let it rest for 5 hours: Cut the cabbage leaves and put it on a bowl Pour some water Let it rest for 5 hours We call this technic the five hours method
  • 18. We will use this ph scale If it is alkaline is good for the skin but if it is acid it is bad depending the part of the body.
  • 27. Why red cabbage can detect the PH??? The purple cabbage has anthocyanin that are found in pigments. When we boil, crash or let it rest the water we liberated pigments of the cabbage and that rebelled PH The color change is due to a structural change induced by protonation or deprotonation of the species.
  • 29. Results The 5 hours method is the one who reveal PH. we let it rest work very good because it have more intensity of the color and this helps us with our experiment and give us more clues.
  • 30. Conclusion There are many forms to do this experiment. If you want to make it home made, use number 3. This liberate more the pigments reveling better the potential hydrogen. We comprobe this because in the same product is was more intense the color than the other forms
  • 31. Besides The best soap was number 4 because is was made for babys and the care of skin. The worst one was DEJA number 1 that have a weak acid level, but still acid. The acid will dry your hands. We recomend you to dont use dust soaps because they are bad for your skin.
  • 32. Opinion With this experiment we learn how to do a measure the ph in a natural form. We learn that not all the soaps are good. This was interesting because we bring something that can only be made in laboratories and we made It in our houses.