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47 Cards in this Set
- Front
- Back
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Mixture |
a physical combination of two or more substances present in variable amounts |
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Matter |
Two types: 1. Mixture 2. Pure Substances |
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Percent |
Parts per hundred |
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Respiration |
The foods we eat are metabolized to produce carbon dioxide and water |
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ppm |
parts per million .0393% means 393 parts per million |
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The four gases that contribute to air pollution |
1. Carbon Monoxide 2. Ozone 3. Sulfur Dioxide 4. Nitrogen Dioxide |
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Carbon Monoxide |
-No color, taste, or smell -Inhale: interferes with ability of your hemoglobin to pass oxygen -Exhale: Dizzy, headache -Too much exposure can kill you |
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Ozone |
-Sharp odor -Can reduce lung function |
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Sulfur Dioxide |
-Sharp, unpleasant odor -Dissolves in lungs to form an acid -Comes from burning of coal |
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Nitrogen Dioxide |
-Brown color -Produces acid in lungs -Formed by Nitrogen monoxide |
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Particular Matter (PM) |
-Complex mixture of tiny solid particles and tiny liquid droplets -Classified by size rather than compostition |
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PM10 |
-Particles with an average diameter of 10 or less |
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PM2.5 |
-Particles with an average diameter of 2.5 or less |
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Risk Assessment |
-The process of evaluating scientific data and making predictions in an organized manner about the probabilities of an outcome |
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Toxicity |
-The intrinsic health hazard of a substance |
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Exposure |
The amount of the substance encountered |
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Ambient Air |
-Air surrounding us, outside air |
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Troposphere |
-The lower region of the atmosphere in which we live that lies directly above the surface of the earth |
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Green Chemistry |
-A set of key ideas to guide all in the chemical community |
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Element |
-One or the 100 or so pure substances in the world for which compounds are formed |
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Compound |
-A pure substance made up of two or more different elements in a fixed chemical combination H20 |
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Chemical Symbols |
-One or two letter abbreviations for elements Au is gold, etc |
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Metals |
-Shiny elements that conduct heat and electricity well -Green on the periodic table |
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Nonmetals |
-Do not conduct heat or electricity well -Light blue |
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Metalloids |
-8 of them that lie between metals and nonmetals -Light gray |
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Groups |
-Vertical columns |
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Noble Gas |
Falls in 8A group |
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Atoms |
-The smallest unit of an element that can exist as a stable unity |
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Molecule |
-Two or more atoms held together by chemical bonds |
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Chemical Formula |
-Represents the elementary composition of a substance |
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Diatomic Molecule |
A molecule consisting of two atoms |
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Combustion |
-The process of burning to release energy in the form of heat and light |
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Chemical Reaction |
-a process where reactants turn into products |
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Law of Conservation of matter and mass |
-In a chemical reaction matter and mass are conserved |
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Aerosols |
-Liquid and solid particles that remain in the air |
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Catalyst |
-A chemical substance that participates in a chemical reaction and influences its rate without changing itself |
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Volatile |
-It evaporates easily |
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Organic Compound |
-Contains carbon, hydrogen and sometimes nitrogen and oxygen |
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Volatile Organic Compounds (VOCs) |
-Carbon containing compounds that pass into vapor phase easily |
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Secondary Pollutant |
-Produced from chemical reactions involving one or more other pollutants |
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Tragedy of the commons |
-Resource is common to all, tragedy can't be blamed on one group |
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Carcinogenic |
-Capable of causing cancer |
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Coalescents |
-Chemicals added to soften the latex particles in paint so that these particles spread to form a continuous film of uniform thickness |
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Significant Figure |
-A digit included (or excluded) to represent the accuracy with which an experimental quality is known |
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Done |
Y |
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You |
E |
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Are |
S |
