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Colegio San Patricio

                             Science Fair 2007

                              Splitting Water


Team Members:                                Teacher: Ms. Mary Padilla

Diana Chapa
Rolando                                      Grade: 7”G”
Alejandro Robles



Project Description: Can water be split into oxygen and hydrogen?

Project Hypothesis: We think that water can be split into hydrogen and
oxygen with the use of a battery and pencils.

Project Area: Chemistry

Project Type: Investigation and experiment

Abstract

        Electrolysis is made when certain chemicals react together. If an
electrical current is passed through water between electrodes the water is
split into its two parts: oxygen and hydrogen. The purpose of our
experiment is to create electrolysis by connecting two pencils that are in a
glass of water to a nine-volt battery. We observed that bubbles were
produced at the tips of the pencils, so the water was being split into
oxygen and hydrogen. We also observed that one of the pencil tips
produced more bubbles than the other. This is because in water for every
oxygen atom there are two hydrogen atoms.

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Abstract

  • 1. Colegio San Patricio Science Fair 2007 Splitting Water Team Members: Teacher: Ms. Mary Padilla Diana Chapa Rolando Grade: 7”G” Alejandro Robles Project Description: Can water be split into oxygen and hydrogen? Project Hypothesis: We think that water can be split into hydrogen and oxygen with the use of a battery and pencils. Project Area: Chemistry Project Type: Investigation and experiment Abstract Electrolysis is made when certain chemicals react together. If an electrical current is passed through water between electrodes the water is split into its two parts: oxygen and hydrogen. The purpose of our experiment is to create electrolysis by connecting two pencils that are in a glass of water to a nine-volt battery. We observed that bubbles were produced at the tips of the pencils, so the water was being split into oxygen and hydrogen. We also observed that one of the pencil tips produced more bubbles than the other. This is because in water for every oxygen atom there are two hydrogen atoms.