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In this introductory activity and demonstration, learners are introduced to the concept that different substances react chemically in characteristic ways.

This is an activity about acid-base reactions using eggs and vinegar. Learners place eggs inside a container of vinegar and leave to soak overnight.

In this experiment, learners test multiple food items to see if they are an acid or base using an indicator solution created with red cabbage.

Learners make kimchee or sauerkraut, which is really just fermented cabbage, in a 2-liter plastic bottle.

In this activity, learners explore acids and bases by preparing six solutions that combine vinegar and ammonia, ranging from acid (all vinegar) to base (all ammonia).

In this activity, learners use detergent solution to compare two solutions containing vinegar and cream of tartar.

A group of learners simulates the spread of disease by trading slips of paper, one set of which has been treated with a baking soda solution.