- Some indicator solutions and papers will indicate both an acid and a base, while others are specific to just one. In this lab you will be making a test paper that will indicate the presence of a base.
MATERIALS NEEDED:
Zip-lock plastic bag
Teaspoon
1/3 cup alcohol
1/4 teaspoon turmeric powder
Coffee filters
Cup
Cookie sheet
Quart bowlPROCEDURE:
Fill a cup one-third full with alcohol.
Stir 1/4 teaspoon powdered turmeric into the alcohol.
Pour the solution into the quart bowl.
Dip one coffee filter at a time into the turmeric solution.
Place each wet filter on the cookie sheet and allow them to dry.Cut the dry papers into strips about one-half inch by three inches.Store the strips in a zip-lock plastic bag.PROCEDURE CHANGE FOR A CLASS:
- Make enough test strips for the class to use in future labs.
RESULTS:
- Indicators are materials that have a specific color change. The dry turmeric paper is a bright yellow and is an indicator for a base. The color change is from yellow to red.
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- Make enough test strips for the class to use in future labs.
MAKING TURMERIC PAPER
INTRODUCTION: