TEA   

Problem:

What is the effect of pH levels of different substances on the pH of tea?

Hypothesis:

We believe hat adding different substance to tea will change it's original pH level.

Materials:

- Measuring cup -pH paper -Thermometer -lemon -sugar -Measuring spoon - spoon -cream -lime -syrup -mug -tea -honey -milk

Procedure:

1) Measure one cup of boiling water, pour into mug and let steep.

2) Take temperature of tea and make a note.

3)Test the pH of the tea and test the pH of one of the substances. Record.

4) Add 5 teaspoons of the substance to the tea.

5) Stir the solution and test the pH. Record.

6)Repeat steps 1-5 with the remaining substances.

Results:

Both the substances and the tea were acidic. Only when highly acidic substances caused a noticeable change in the pH level.

Conclusion:

There wasn't a consistent change in the pH level when the substances were added to the tea. Only adding certain substances changed the pH of the tea.

Application:

Since all pH level were acidic, drinking tea is not be a good way to relive an upset stomach. People should be aware to choose a better alternative for indigestion.

Did Well:

We kept all our variable controlled.

Problems:

Boil a kettle of tea and test less amounts so too much tea is not wasted. Use a pH meter to test the pH levels for better accuracy. Test different amounts of each substance to compare.

Dan  & Fairy's