Sure, your learners know water is made up of two molecules, but watching them separate helps the class see the construction like never before. This resource provides directions on how to build a simple electrolysis device using a...

How do people determine if something is acidic or basic? Learners make their own acid-base indicators using red cabbage and then determine the acidity and alkalinity of different substances. First, they test substances of known pH and...

Abracadabra! Provide your class with the tools to perform a chemical "magic show" as they predict the charges of various ions, determine ionic compound formulas, and make observations to determine when a chemical reaction between...

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. 

During a three-part activity, learners make a cabbage juice pH indicator and use it to analyze the waste products of yeast after feeding them with sugar. The intent is to demonstrate how living organisms produce carbon dioxide, which is...

Super scientists tests the toxicity of water using radish seed bioassays. Over the course of five days, scholars observe the germination process of several radish seeds, looking closely at their roots to determine the level of toxins...

If you don't want to drink red cabbage juice, here's another use for it—a decoder! Using vinegar and ammonia-based window cleaning liquids as invisible inks, scholars create designs in the second lesson of the series. Red cabbage juice...

Groups use alcohol and chromatography paper to separate the color components of black ink. The purpose of the activity is to allow the class to become aware that mixtures exist in hidden places. 

After brainstorming what they know about ocean acidification, youngsters place eggs in acid to determine the effects on calcium-containing organisms, and add carbon dioxide to solutions with sea shell material to discover the impact on...

Precipitation reactions are always interesting. How about one that forms a precipitate using a gas? Chemists of any age will enjoy this twist on a standard solubility lab. Partners observe the lack of interaction between sodium...

Sugar isn't good for you, but it's great for yeast! Scholars design an experiment to investigate how variables affect the rate of sugar consumption in yeast. The last installment of a nine-part Life Science unit considers how scientists...

Wind it up and let it go. Individuals build a basic spool racer in the second portion of a six-part unit on energy. After receiving three criteria, pupils modify their designs to meet the new challenge. Pairs compete against each other...

With a piece of plastic here and a piece of plastic there, here a piece, there a piece, everywhere a piece. Teams go on a field trip in order to document the locations and kinds of plastic trash in an area near them. The eighth...

A unique upper level lab showing how to take advantage of the different transition points of two indicators to determine the concentrations of two unknowns at once.

In this lab experiment, students will use red cabbage as an indicator to test whether a substance is an acid or a base. Teacher's notes provide background information.

At this site you will find a step by step process for making a natural pH indicator. One of the main materials you need to have on hand is a red cabbage.

A hands-on science experiment where students test acidity levels by using red cabbage extract and learn the acid levels of known and unknown liquids.

Students take advantage of the natural ability of red cabbage juice to perform as a pH indicator to test the pH of seven common household liquids. Then they evaluate the accuracy of the red cabbage indicator, by testing the pH of the...

Overview of how chemical signals from animals mark territories, identify individuals, signify social rank, and indicate reproductive and health status.

In this lab activity, students will learn how red cabbage can be used as an indicator of an acid or base by looking at its color changes.

A lab activity where students will neutralize and acidic solution with a base and a basic solution with an acid by using their knowledge of a red cabbage indicator. This site includes teacher and student instruction for the lab activity...

Guidelines for a simple lab demonstration using phenolphthalein, a chemical that changes color depending on whether it is in the presence of an acid or base.

Hunkin's Experiments is a group of simple cartoon illustrations of scientific principles. Some would work well in the classroom, but others have little value beyond entertaining students. All of the projects are easy to do. This one...