In this demonstration, energy will be produced from combining of hydrogen and oxygen to form water. Platinum will serve as the catalyst and electrodes will be prepared by coating metal mesh with platinum. The hydrogen and oxygen will come from electrolysis. After the cell is set up, a brief current is applied (with a 9-volt battery) causing the formation of hydrogen gas bubbles on one electrode and oxygen gas bubbles on the other. Using a voltmeter, electricity produced by the recombining of hydrogen and oxygen, facilitated by the platinum metal catalyst, can be observed. Kit contains enough materials for 5 demos. Aligned to the Next Generation Science Standards (NGSS)* Disciplinary Core Ideas: PS1.A Performance Expectations:HS-PS1-1; HS-PS1-2 Cross Cutting Concepts: Patterns Engineering Practices: Developing and Using Models Kit Includes: 15 Brass Metal Mesh Squares 2 Red Connecting Wires w/Alligator Clips 2 Black Connecting Wires w/Alligator Clips D-cell battery holder w/Clips 25mL Chloroplatinic Acid, 0.005M Glass Rod DOT Info: Small quantity exemption 173.4 THIS PACKAGE CONFORMS TO 49 CFR 173.4 for domestic highway or rail transport only *”Next Generation Science Standards” is a registered trademark of Achieve. Neither Achieve nor the lead states and partners that developed the Next Generation Science Standards was involved in the production of, and does not endorse, this product. WARNING: This product can expose you to chemicals including Phthalates, Lead and lead compounds, which are known to the State of California to cause reproductive harm. For more information go to http://www.P65Warnings.ca.gov.