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Our Glaciers: Then and Now activity kit helps you see the changes taking place in glaciers around the world. See all our activity kits and classroom activities.
Here are four different ways chemists use to show a molecule of hydrogen peroxide. In the colored molecule models, hydrogen is white and oxygen is red.
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Windows to the Universe original artwork by Randy Russell.

Hydrogen Peroxide - H2O2

Hydrogen peroxide (H2O2) is a kind of chemical. A molecule of hydrogen peroxide has oxygen and hydrogen atoms in it. Hydrogen peroxide is a clear liquid.

Hydrogen peroxide is in some liquids that are used to clean wounds.

There is a small amount of hydrogen peroxide in Earth's air. Hydrogen peroxide helps change sulfur trioxide (SO3) in the atmosphere into sulfuric acid (H2SO4). Sulfuric acid is part of acid rain.

Last modified February 8, 2006 by Randy Russell.

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Sulfuric Acid - H2SO4

Sulfuric acid is a very common type of acid. Acid rain has sulfuric acid in it. Acid rain harms plants, fish, and other living things. A type of air pollution causes acid rain. When people burn fossil...more

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Ammonia - NH3

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA