Chemistry

Students reading a “Caution: Keep away from water!” notice on an electrical appliance may assume all water conducts electricity. Clear up their misconception with this easy-to-assemble conductivity tester that uses a piezoelectric buzzer and emits an...

How big is a million? What does it mean for a contaminant to be found in a concentration of one part per million? These amazing bottles make parts per million and molecular concentration concepts more concrete for your students. Becker “One in a Mill...

How big is a million? What does it mean for a contaminant to be found in a concentration of one part per million? These amazing bottles make parts per million and molecular concentration concepts more concrete for your students. Becker “One in a Mill...

How big is a million? What does it mean for a contaminant to be found in a concentration of one part per million? These amazing bottles make parts per million and molecular concentration concepts more concrete for your students. Becker “One in a Mill...

Amazing! Beautiful popcorn-like crystals actually growing out of a rock. How is this possible? In this demonstration, the teacher performs tests on a limestone rock to determine some of its chemical and physical properties. The rock is then placed in...

Grow your own spectacular display of long-lasting crystals in gels-using large sized demonstration bottles! Mix two solutions together to form a gel overnight. Add another solution to the hardened gel and watch amazing crystals begin to form before y...

Do it again! This is what your students will say once they have seen the key concepts of a double replacement reaction. Water soluble paper "bonds" hold the starting molecules together. When the molecules are placed in water, the bonds brea...

Add more color to the classic ammonia fountain demonstration by down-sizing it! Safely collect ammonia gas in jumbo pipet bulbs, place them in a rainbow array of indicator solutions, and give each bulb a gentle squeeze to draw up just a drop of water...

Demonstrate the properties of proteins and the effect of pH on protein solubility with this colorful and reversible activity. Proteins contain many acidic and basic groups that have different structures at different pH values. When acids and bases ar...

Are there any patterns or periodic trends in the solubility of alkaline earth metal compounds? Don't give students the answer to this question-let them discover it with this demonstration! Recreate the solubility pattern of the alkaline earth metal c...

When it comes to mixtures, size matters! The size of the particles will determine whether a mixture is a solution, colloid, or a suspension. Through a series of four demonstrations, students will see and learn how to easily identify a mixture as one ...

Two clear solutions are combined to form a homogeneous mixture. As a solid chemical is added, the two seemingly inseparable solutions begin to "sort" into two layers. As more solid is added, the two layers become more distinct. Chemical Dem...

Do you and your students need a spring break already? If you can't see a Hawaiian sunset in person, simulate it in the classroom! This fun demonstration shows how light passing through a colloidal suspension is affected by the size of the colloidal p...

Mix water from a large beaker back and forth into five other beakers. Your students will observe a variety of color changes. Solutions looking like red wine, lemonade, grape juice and others are produced with the final solution being a distinct yello...

In a matter of seconds, columns of various colors sprout up from the bottom of a beaker containing a clear liquid. The crystals form like stalagmites in a cave and will continue to grow for several days. This beautiful crystal garden is fascinating t...

A precipitate forms as a solution is heated, and dissolves again as it cools-opposite of what is typically observed in precipitation reactions. This "discrepant demonstration" is great for introducing the idea that there are exceptions to m...