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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).

Learners discover that their breath contains carbon dioxide, one of the pollutants found in car exhaust.

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.

In this Spanish-language chemistry activity, learners use simple materials to explore how fire extinguishers work to put out fires.

In this activity, learners create and reveal secret messages written with invisible ink! The invisible ink is actually a baking soda solution, and the magical revealing liquid is fruit juice.

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

In this activity, learners test the pH of safe liquids available at home by creating a pH indicator from mashed blueberries.

In this activity, learners make acid/base indicator paper, place the indicator paper on an anthill, disturb a bunch of ants, and then observe what happens!

Learners make their own acid-base indicator from red cabbage. They use this indicator to test substances around the house.

In this activity, learners will explore acid-base reactions and create their own bubbly results.

In this activity on page 3 of the PDF, learners discover how science and Halloween are fun companions as they make paper bleed.

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.

This is an activity (on page 2 of the PDF under Bone Regrowth Activity) about the two main components of bone - collagen and minerals (like calcium) - and how they each contribute to its flexibility a