Oxygen Give and Take

Summary: This is a series of three activities followed by a worksheet. The concepts taught include gas production (O2 and CO2), chemical reactions, catalysts, and pollution caused by combustion. Correlation to National Science Education Standards Content Standard 9-12 Physical Science B Chemical Reactions Chemical reactions may release or consume energy. Some reactions such as the burning of fossil fuels release large amounts of energy by losing heat and by emitting light. Content Standard 9-12 Earth and Space Science D Geochemical Cycles The earth is a system containing essentially a fixed amount of each stable chemical atom or element. Each element can exist in several different chemical reservoirs. Each element on earth moves among reservoirs in the solid earth, oceans, atmosphere, and organisms as part of geochemical cycles. Content Standard 9-12 Science in Personal and Social Perspectives F Environmental Quality Materials from human societies affect both physical and chemical cycles of the earth