Making A Natural pH Indicator

Did you know you can make your own pH indicator from plants? The sixth activity in a seven part series teaches pupils to do just that. They work with the extracts of natural colors from flowers and leaves to observe color changes in...

Explore the range of pH using an assortment of household liquids. Scholars create their own pH indicators from cabbage and determine the pH of several liquids. To further their exploration, individuals use the same liquids to create...

How does a change in pH affect the ocean ecosystem? Scholars explore the idea by making an acid-base indicator in part seven of the 10-installment Discover Your Changing World series. First, they explore impacts of carbon dioxide in...

Students study the differences between an acid and a base.  In this pH lesson students view a demonstration then test chemicals in groups.

Rotating through five stations, evolutionary biologists explore the question of how changes in DNA facilitate the changes in a population over time. High-quality, colorful cards of animals, skeletons, skulls, and DNA sequences can all be...

Steve Spangler shows how to make your own litmus paper. Using blackberries, construction paper, and water, learners can make their own litmus paper in the classroom. Then, they can take different liquids, such as oil and soapy water, and...

Steve Spangler shows how to make your own litmus paper. Using blackberries, construction paper, and water, learners can make their own litmus paper in the classroom. Then, they can take different liquids, such as oil and soapy water, and...

Studying acids and bases can be basic. Over the course of four short videos, an instructor explains the pH scale. Viewers observe a demonstration and watch the instructor solve two quiz questions in detail. 

Use a scientific video that begins with types of pH indicators, including pH meters, universal indicators, and litmus paper to explain titration indicators. 

Using the natural pH indicator of red cabbage juice, groups determine the pH of different everyday liquids. As they work, pupils gain an understanding of pH that may help deal with contaminants in the water supply.