### substance | mixture | suspension:

Vapor
* Most vapor becomes clouds.
* Most vapor comes from evaporation
  - exists in atmospheres
  - falls as rain
  - forms high clouds
* Most vapor has absorption
  - foreign particles
* Most vapor is produced by evaporate water
  - liquid water
  - loses heat
  - rises into air
* Most vapor turns into liquid water
  - precipitation
* Most vapors are heavier than air and collect near the floor
* Some vapor absorbs long wave radiation
  - microwave radiation
  - always exists in the atmosphere
  - becomes liquids
  - carries heat
* Some vapor combines with carbon dioxide
  - comes from oceans
  - contains carbon
  - creates sensation
  - falls to earth
  - freezes into tiny ice crystals which attract cooled water drops
  - has energy levels
  - leads to heat
  - loses pressure
  - passes through stomata
* Some vapor releases energy
  - heat energy
* Some vapor turns into crystal
  - water ice crystal
* analytes with hetero-atom functionality can in some cases be detected at single ppbv levels.
* are corrosive to the mucous membranes of the upper respiratory tract
  - flammable
* are heavier than air and can accumulate in low areas
  - probably narcotic in high concentrations
  - richer in lighter boiling fractions
  - very toxic
* attack the central nervous system.
* can cause acute as well as chronic poisoning
  - coughing, labored breathing and in severe cases, death
  - eye irritation
  - flash fire
  - headache, dizziness and fatigue
  - headaches and dizziness, convulsions and unconsciousness
  - headaches, dizziness and stupor
* can cause headaches, dizziness, nausea and in severe cases, death
  - nausea, labored breathing and in severe cases, death
  - labored coughing, labored breathing and in severe cases, death
  - respiratory distress
  - strong respiratory irritation
* can flow along surfaces to distant ignition source and flash back
  - low lying areas
* can form explosive mixtures in air at elevated temperatures
  - with air
  - ignite, store away from heat and open flame
  - induce heart attacks
* can irritate the eyes
  - nose, throat and lungs
* can travel along the ground and can be ignited be a nearby flame or spark
  - to a source of ignition and flash back
* cause eye irritation
  - irritation of nose
* cause irritation to mucous membranes
  - the eyes with redness, pain, and blurred vision
* causes few problems
* changes into water.
* condenses into raindrops
  - spherical raindrops
* contributes to clouds.
* creates health problems
* displace air and can cause asphyxiation in confined spaces.
* drives travel from an area of high relative humidity to low relative humidity.
* enter the respiratory system directly with inhaled air.
* enters atmospheres.
* evaporate from liquids, such as pesticides, paints, adhesives, and lacquer thinner
  - into the air from liquids, such as solvents
* evaporates from surfaces.
* fill a space then cool.
* floats in air.
* form an explosive mixture with air between the upper and lower explosive limits
  - explosive vapors with air, keep away from open flame or heat
* forms clouds
  - fumes on contact with moist air
  - effects
  - strong effects
* have objectionable odor.
* irritate the eyes with redness and pain
* is gases
  - located in air
* makes problems.
* mixes with air.
* quickly enter the body.
* reach target tissues within minutes.
* reduces transpiration.
* released by activated heater can displace oxygen.
* rises in masses as great as mountains, Then it seeks the green, blue and orange on earth
* severely irritate the eyes
  - mucous membranes and respiratory tract
* suspends in air.
* then rise up to the brain, and take shapes that often image falsehood, but sometimes truth.

### substance | mixture | suspension | vapor:

Ammonia vapor
* combines with oxygen to produce water vapor and nitrogen.
* turns pink litmus paper blue.