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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
Pictures
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.
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