Orange Juice Acidity

Data Analysis

The data found in the experiment is that the averages of all the pH test strips are the same in all 3 experiments. Therefore, there is no difference in the acidity change in the different temperatures of orange juice.

Procedures

References

1.) Take your cup labeled cold and place it in your refrigerator (preferably at 30 degrees for 30 minutes

2.) When the time is up, then take a pH strip and place it in the cup for 2 seconds and take it out. Label that strip with a C.Only focus on the pH category and record the color that is represented.

3.) Next take your cup labeled room temp. and place it in the closest room (temperature recommended at 72 degrees) and close all the doors in that room for 30 minutes.

4.) When the time is up, then take a pH strip and place it in the cup for 2 seconds and take it out. Label that pH strip R. Only focus on the pH category and record the color that is represented.

5.) Finally, take the cup labeled warm and place it in your oven at 170 degrees for 10 minutes.

6.) When the time is up, then take a pH strip and place it in the cup for 2 seconds and take it out. Label the strip with a W. Only focus on the pH category and record the color that is represented.

1. http://www.education.com/science-fair/article/storage-temperature-orange-juices-acidity/

2.

https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&es_th=1&ie=UTF-8#q=what%20is%20the%20normal%20acidity%20in%20orange%20juice

3.

Abstract

http://www.ultimatecitrus.com/vitaminc.html

Have you ever wondered if your orange juice looses its tangy flavor after it has been sitting on the counter for a while? or if you haven't had some from the fridge in a week? or if you left it outside while you were playing with your friends? Well the problem states that What will happen to the acidity in orange juice if left in different storage temperatures? considering the background research the warmer vicinity will impact the acidity the most of the trials.

When the test were taken, it came to be that the averages of the different test were all the same. The pH in every singe test was the same as the colder, warmer, and room temperature glasses of orange juice. The test have proven the hypothesis incorrect for there is no acidity change if the juice is kept or left in a different storage.

Future Research

Control

The acidity in the cold, warm, and room temperature orange juices.

Variables

Independent Variable: The temperature that the orange juice is entered in.

Dependent Variable: The Orange Juice

In this experiment, the temperature may have varied in a little larger ranges than it should have been and should have been changed. Instead of using pH paper strips, litmus paper could have also been a very good material to use so that the color would have been more visible to the students doing the experiment.

Research Problem

Orange Juice Acidity

By: Rylee Lord

Period: 2

Henrichs

Does storing your orange juice at different temperatures affect its acidity?

Hypothesis

If the orange juice in placed in the oven (warmer), then the acidity will be higher than the room temperature and the colder tests.

Intro/Background Research

Oranges contain a lot of vitamin C. The normal acidity for an orange is 3.0 and depends on the brand of orange juice that you use in your experiment. It also depends on f there is any added sugars to the juice that adds another sweetness to it to increase the tartness. Orange Juice is slightly more acidic lemon juice, with a pH value of 2, and just above the less acidic tomato juice, with a pH value of 4. Normally when atoms are warm they tend to spread apart which makes more sense because when atoms are cold they are more paced. When they are warmer then they can spread throughout the juice to keep that tangy flavor rather than it being cold and having it taste watered down in the different temperatures.

Conclusion

Materials

Based on the overall tests in this experiment it has come to a conclusion that it does not matter what temperature the orange juice is, it is all the same acidity in hot, cold, or room temperature storage.

1. 3 labeled( cold, warm, room temp.) glass cups filled with one cup of orange juice each

2. a cold vicinity ( preferably 20 degrees or below)

3. an oven that can reach the temperature to 170

4. a room that is 75 degrees or below ( 72 degrees is recommended)

5. pH paper strips

6. a timer (optional)

7. something to record your data

Graph and Data Table

Warm Cold Room Temp

Trial 1 3.6 3.6 3.6

Trail 2 3.6 3.6 3.6

Trial 3 3.6 3.6 3.6

Experiment Pictures

Constants

The amount of Orange juice will not be changed in this experiment.

Trail 2

Trail 1

Trail 3