1. Cabbage lab
By Vanessa Velasco

2. Purpose
To measure the ph of various household materials by using a natural indicator to make an indicator chart.

3. Materials Knife Red cabbage leaves 1 cup measure Hot water 2 jars
Clean white cloth
Teaspoon
Tape
3 sheets of white paper
Pencil
Ruler
10 plastic cups
White vinegar
Baking soda
House hold ammonia
Dropper
Various house hold items

4. Procedure
Put 1/2 cup of finley chopped red cabbage leaves in a and add 1/2 of hot water
Strain the extract through a piece of cloth into a clean jar
Tape 3 sheets of paper together. Draw a line 5 cm apart and label 1-14
Put about 1 cm indicator to the three cups. To one cup add several drops of vinegar. Add a pinch of baking soda to the other. On the third and final cup add ammonia.
Repeat on household items

5. Pictures

6. Conclusion
In this lab the purpose was to indicate hosehold items on a ph scale. It would tell whether it was acidic or basic. Most of the cleaning products were acidic. What i could have improved on was having clear cups because it was hard to identify them on a ph scale.

7. Analyze and conclude
The color of the indicator was at a basic condition.
Some chemical changes that were responsible were vinegar,ammonia, baking soda,milk,lemon juice ,laundry detergent, dish detergent , and carbonated beverages.
Vinegar: acidic , ammonia: basic, baking soda: neutral, milk: neutral, lemon juice: acidic, laundry detergent: acidic,dish detergent:acidic, dish detergent:acidic.