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9 Enviro. Chemistry

Environmental chemistry flashcards

QuestionAnswer
Rain that is more acidic than usual (pH less then 5.6) due to high amounts of dissolved acidic gases. acid rain
Weathering caused by plants and animals. biological weathering
Weathering caused by chemicals. chemical weathering
Very fine particles of rock. clay
The movement of pieces of rock by the wind, water, etc. erosion
A mixture of rotting plant material and animal remains found in soil. humus
Calcium oxide (made by roasting limestone or chalk). lime
The best soil for growing plants. Mixture of humus, clay and sand. loam
A chemical found in rocks. mineral
A reaction in which an acid cancels out an alkali. neutralisation
A scale which measures how acidic or alkaline a solution is. pH
Weathering caused by changes in temperature. physical weathering
A soil that contains larger particles than clay soils.Water passes through it easily. sandy soil
Depositing of broken up pieces of rock, sand and clay. sedimentation
A mixture of rock fragments, humus, air, water and dissolved minerals. soil
A mixture of dyes which turns different colours as the pH of a solution changes. universal indicator
The break up of rocks into smaller pieces by natural processes. weathering
A device fitted to a car’s exhaust to change harmful gases into harmless gases. catalytic converter
A slightly acidic gas formed when carbon reacts with oxygen (and during respiration). carbon dioxide
The scientific word for burning. combustion
A substance that reacts with certain substances and wears them away. corrosive
Acidic gases formed when nitrogen reacts with oxygen. nitrogen oxides
An acidic gas formed when sulfur reacts with oxygen. sulfur dioxide
A device used in power stations to remove sulfur dioxide gas from the gases coming out of the chimney. sulfur precipitator
Substances released into the atmosphere which should not be in air. air pollution
The gradual increase in mean (average) global temperatures. global warming
The Sun’s energy being trapped by gases in the atmosphere, thought to lead to global warming. greenhouse effect
Created by: grovebiol