dioxide
Two oxygen atoms
A dioxide is a chemical compound containing two oxygen atoms bonded to another element.
Carbon dioxide is the most familiar—the gas we exhale and plants absorb.
Sulfur dioxide and nitrogen dioxide are industrial pollutants.
The prefix di- indicates two, distinguishing dioxides from monoxides (one oxygen) and trioxides (three).
Bonded atomic group
- covalentSharing electrons between atoms
- bondingForming close connections
- valenceCombining power measure
- oxidationLosing electrons chemically
synthesis · reactivity · anhydride · stoichiometry · inorganic · solubility · molecular weight · electron
Sunlight-activated urban pollution
- emissionsSubstances released into air
- exhaustUse up entirely
- industrialOf factories and production
- vehiclesMachines for transportation
air quality · particulates · contaminants · acid rain · urban · health risks · toxicity · environmental
Substances released into air
- greenhouseClimate-controlled plant enclosure
- climate changePlanetary atmospheric transformation
- global warmingRising planetary temperatures
- fossil fuelsCombustible prehistoric organic deposits
carbon footprint · combustion · sequestration · capture · storage · atmospheric · ppm · concentration
Pulmonary gas exchange
- inhalationTaking breath in
- exhalationBreathing out air
- lungsRespiratory chest organs
- gas exchangeTransfer of respiratory molecules
alveoli · bloodstream · hemoglobin · metabolism · cellular respiration · mitochondria · aerobic · ventilation
Photosynthesizing rooted organisms
- stomataMicroscopic plant pores
- chloroplastLight-harvesting cell structure
- fixationPersistent mental attachment
- glucosePrimary cellular fuel
leaves · transpiration · C3 · C4 · CAM · carbon sink · forest · algae
molecule
Bonded atomic group
- covalentSharing electrons between atoms
- bondingForming close connections
- valenceCombining power measure
oxidation · synthesis · reactivity · anhydride · stoichiometry · inorganic · solubility · molecular weight · electron · double bond
smog
Sunlight-activated urban pollution
- emissionsSubstances released into air
- exhaustUse up entirely
- industrialOf factories and production
vehicles · air quality · particulates · contaminants · acid rain · urban · health risks · toxicity · environmental · regulation
emissions
Substances released into air
- greenhouseClimate-controlled plant enclosure
- climate changePlanetary atmospheric transformation
- global warmingRising planetary temperatures
fossil fuels · carbon footprint · combustion · sequestration · capture · storage · atmospheric · ppm · concentration · Kyoto Protocol
breathing
Pulmonary gas exchange
- inhalationTaking breath in
- exhalationBreathing out air
- lungsRespiratory chest organs
gas exchange · alveoli · bloodstream · hemoglobin · metabolism · cellular respiration · mitochondria · aerobic · ventilation · pulmonary
plants
Photosynthesizing rooted organisms
- stomataMicroscopic plant pores
- chloroplastLight-harvesting cell structure
- fixationPersistent mental attachment
glucose · leaves · transpiration · C3 · C4 · CAM · carbon sink · forest · algae · phytoplankton
- carbon dioxideRespiration byproduct, photosynthesis fuel
- sulphur dioxideToxic gas from burning fossil fuels
- carbon dioxide emissionsGas expelled by combustion
- sulfur dioxideSO₂ gas compound
- carbon dioxide levelsAmount of greenhouse gas present
- carbon dioxide buildupIncreasing atmospheric concentration of exhaled gas