Air Quality

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Molecule
Air is made up of small molecules with large spaces invetween. Molecules are groups of atoms joined together.
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Atmosphere
The atmosphere is a layer of gases that surrounds the Earth. It is about 15km thick. The atmosphere is like a thin layer of skin around the Earth.
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Particulates
Some gases are released into the atmosphere by volcanoes. They include; sulfur dioxide, carbon dioxide, carbon monoxide, nitrogen dioxide and water vapour. Particulates form smoke and ash. They are small enough to stay suspended in the air.
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Air
Air contains the gas Oxygen. Air also contains nitrogen, argon, carbon dioxide and water vapour. Carbon dioxide helps keep the Earth warm enough to support life.
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Pollutant
Can harm us by affecting our breathing and affect the environment. Instuments record the carbon monoxide, nitrogen dioxide and sulfur dioxide levels.
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Concentration
The amount of pollutant in a certain volume of air.
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Chemical change/reaction
Any change that forms a new chemical is called.
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Atoms
Coal is made up of carbon atoms and Oxygen molecules from the air are neeeded for coal to burn. The product is called Carbon dioxeide (CO2) It is formed when the Oxygen molecules seperate into Oxygen atoms.
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Hydrocarbon
Natural gas is mainly methane (CH4) It is made up of Hydrogen and carbon atoms. Formed by the atoms seperating.
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Combustion
Some chemicals can react rapidly with Oxygen to release energy and possibly light. Can also be known as burning. During combustion, the Oxygen and Carbon atoms are rearranged.
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Reactants
The chemical before the arrow are the ones that react together. Example: ? + ? = Products
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Products
The chemicals after the arrow are the new chemicals that are made. Example: Reactants + Reactants = ?
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Word Equation
Example: The combustion of charcoal is: Carbon + Oxygen = Carbon dioxide
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Chemical Equation
Show the atoms that make up each of the chemiclas involved. This uses the symbols for each chemical. Example: C + O2 - CO2
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Conservation of Atoms
The atoms rearrange to form new chemicals but the old atoms are still there. Example: when a car engine burns, the petrol is not destroyed, they are just rearranged to form exhaust gases.
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Properties
Are what make up a chemical different to others
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Reduction reaction
Oxygen is removed from nitrogen monoxide.
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Wet scrubbing
Remove sulfur dioxide from waste gases before it can escape from the power station chimney. Process that uses alkali to react with sulfur dioxide and remove it from flue gases. Calcium oxide and water can be mixed to create alkaline slurry.
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Other cards in this set

Card 2

Front

The atmosphere is a layer of gases that surrounds the Earth. It is about 15km thick. The atmosphere is like a thin layer of skin around the Earth.

Back

Atmosphere

Card 3

Front

Some gases are released into the atmosphere by volcanoes. They include; sulfur dioxide, carbon dioxide, carbon monoxide, nitrogen dioxide and water vapour. Particulates form smoke and ash. They are small enough to stay suspended in the air.

Back

Preview of the back of card 3

Card 4

Front

Air contains the gas Oxygen. Air also contains nitrogen, argon, carbon dioxide and water vapour. Carbon dioxide helps keep the Earth warm enough to support life.

Back

Preview of the back of card 4

Card 5

Front

Can harm us by affecting our breathing and affect the environment. Instuments record the carbon monoxide, nitrogen dioxide and sulfur dioxide levels.

Back

Preview of the back of card 5
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