A potato battery is an electrochemical battery, or an electrochemical cell in which a chemical reaction occurs in a liquid between two different metals. When a wire is placed to connect the metals, it carries an electrical current. An electrochemical cell converts chemical energy to electric energy. This plastic clock has two compartments designed to hold potatoes or fruit. Two coils (one red and one blue) are inserted into a different potato while the green coiled wire is connected to both potatoes. This will then make the clock start working. This is an excellent demonstration clock to use in the science classroom!
This set includes three (3) N95 FDA registered and NIOSH approved and respirators.
These large, powder-free, 5mil Nitrile Exam Gloves are designed and manufactured for superior comfort and protection.
Great premium general purpose KingSeal Nitrile gloves in size SMALL. Not for medical use.
These premium 5mil medical-grade Nitrile Exam Gloves are designed and manufactured for superior comfort and protection.
Box of 100 X-LARGE nitrile exam gloves.
High-protection, fluid-resistant and anti-static disposable lab coat in size Extra Large.
An ancient toy featuring optical illusion and hands-on fun that never grows old!
This caffeine molecule mug makes an excellent gift!
Shake the Pet Tornado clockwise and watch the mini tornado funnel form before your eyes!
Build a robot that's an artist too!
View the glory of space with this hi-tech telescope set!
The large realistic model has removable organs that can be studied and set back into the correct position.
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