Other
Westminster School: Mixed Indicator Lab
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.
PBS
Pbs Learning Media: Acids and Bases: Cabbage Juice Indicator
In this video segment, the ZOOM cast demonstrates how to use cabbage juice to find out if a solution is an acid or a base.
University Corporation for Atmospheric Research
Ucar: Cycles of the Earth System: Carbon Dioxide Sources and Sinks
Students will use a chemical indicator (BTB) to detect the presence of carbon dioxide.
Science Education Resource Center at Carleton College
Serc: Indicator Indi Gator
In this activity the students use critical thinking skills to see how liquids will change the color of an indicator.
Other
Siemens Science Day: Earth Science: By All Indications
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.
Frostburg State University
General Chemistry Online: Water to Wine
The molecular basis of indicator color changes. Includes Chime structures for the acid and base forms of phenolphthalein, methyl orange, red cabbage indicator, and cyanidin diglucoside.
Hunkins Experiments
Hunkin's Experiments: Color
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...
Other
The Science House: Cabbage Juice Indicator
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.
Other
The Science House: Invisible Ink
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.
Quizlet
Quizlet: 5 Indicators of a Chemical Change
This website provides five terms about chemical change for you to practice. Audio is included for each term. This is a great study tool for test preparations.