Cabbage lab By Vanessa Velasco

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

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

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

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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.

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.