Product 12654

Product Details

Welcome your students to the “wonderful world of chemistry!” Five colorful and engaging demonstrations have been selected to help students develop observational and critical-thinking skills—and to get them excited about the amazing science that lies ahead.
• “Think Tube” will have students scratching their heads in wonder. What’s inside the tube?
• Add chunks of dry ice to various colored solutions, then watch as the solutions immediately begin to “boil” and change color. What’s going on here?
• Dip a red sponge into a red solution—the sponge turns blue! Dip the blue sponge into a blue solution and the sponge turns red!
• Passing electric current through a green solution produces gas bubbles at each pencil lead electrode and a rainbow of color changes.
• Fascinating chemical reaction “rotates” back and forth between yellow and blue.

Concepts: Hypothesis, models, pH indicators, acids and bases, electrolysis, decomposition reactions, oscillating reactions, reaction mechanisms.
Time Required: One full class period
Note: Common laboratory glassware and equipment are required but not provided.