pH Scavenger Hunt

By Maaike Goudy and Brittani Singleton

Acid: A chemical substance (typically, a corrosive or sour-tasting liquid) that neutralizes alkalis, dissolves some metals, and turns litmus red.

Base: a chemical species that donates electrons or hydroxide ions or that accepts protons.

Neutral: (from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter; provides a measure on a scale from 0 to 14 of the acidity or alkalinity of a solution (where 7 is neutral and greater than 7 is more basic and less than 7 is more acidic)

Procedure

Materials:

1.Apple juice, butter, cooking oil, drinking water, egg yolk, glass cleaner, hand soap, honey, lemon juice, orange juice, strawberries, vinegar and rubber cement.

2. Teaspoon measurer.

3. 13 cups.

4. 10 (at least) strips of litmus paper

5. Scissors


Procedure:

1. cut the litmus strips into 4 pieces.

2. Assemble; Apple juice, butter, cooking oil, drinking water, egg yolk, glass cleaner, hand soap, honey, lemon juice, orange juice, strawberries, vinegar and rubber cement.

3. Get your teaspoon measurer and 13 cups.

4. Pour a teaspoon of each substance into its own cup.

dip a piece of litmus paper into that cup.

6. observe to see what color it matches on the pH scale

7. Record on a data table the color and substance.

8. Take a picture.

9. Repeat steps 5-8 with different substances and litmus papers in their own cups.