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Oxygen the Element We Breathe
Hydrogen the Lightest Element
Nitrogen the Lifeless Element
20 other sections not shown
acid added alloy aluminum ammonia arsenic atoms barium boils boron break bromine burn calcium carbonate calcium hydroxide calcium oxide called carbon atoms carbon dioxide cesium Chapter chemical chemist named chlorine coal cobalt color combine with oxygen common compounds containing one atom copper degrees centigrade diamond discovered dissolve earth easily fire flame fluorine gases glass gold graphite Greek word meaning hard heat helium hydrogen atoms IIIIIIII IIIIIIII IIIIIIII impurities inert iodine iron kinds of atoms known layer lead light liquid magnesium magnet manganese melts mercury metal mineral mixed mixture molecule contains nickel nitrate nitrogen Osmium ounce oxide oxygen oxygen atoms ozone percent periodic table phosphorus piece plants platinum poisonous potassium pounds powder reason salt silicate silicon dioxide silver slowly small quantities sodium carbonate sodium hydroxide soil solid sometimes steel substance sulfate sulfide sulfur Sulfur dioxide thorium titanium tube uranium vapor wire wood zinc zirconium