Gases in the atmosphere

chem

water

• formula

• % 

• properties

• uses

• H₂O

• varies

• polar molecule

• required by living creatures

uses of carbon dioxide + why (property)

• fizzy drinks - soluble in water

• fire extinguisher - denser than air, doesn't support combustion

• refridgerant - dry ice, solid co2, sublimes so no wet cardboard

Unburned fuels

• how formed 

• problems

• solutions

• incomplete combustion 

• breathing problems, less efficient 

• ensure correct fuel:air mixture when fuel is burned

test for CO2 

• bubble through limewater

• solution will go from colourless to cloudy 

sulfur + oxygen 

• word equation

• basic or acidic

• what do you see

• sulfur + oxygen ---> sulfur dioxide

• acidic

• glows blue

sodium+ oxygen 

• word equation

• basic or acidic

• what do you see

• sodium + oxygen ----> sodium oxide 

• basic 

• yellow flame + white smoke

SO₄ sulfur dioxide

• how formed 

• problems

• solutions

• sulfur impurity burns with fossil fuels

• acidic rain: damages plants, kills fish, corrodes limestone

• remove SO4 by flue gas desulfurisation

phosphorous to find percentage of oxygen in air 

percentage of oxygen in the air using iron

oxygen

• formula

• % 

• properties

• uses

• O2 

• 20%

• very reactive, required for respiration

• hospitals - patient breathing

NO/NO₂ Nitrogen oxides 

• how formed 

• problems

• solutions

• car engines - N₂ in air is reacting at high temos

• acid rain

• catalytic converters 

Nitrogen

• formula

• % 

• properties

• uses

• N₂ 

• 78%

• unreactive

• food packets

melting point of CO₂ and explanation

low - weak intermolecular forces between molecules
co2 is simple molecular bonding

Magnesium + oxygen 

• word equation

• basic or acidic

• what do you see

• magnesium + oxygen ----> magnesium oxide

• basic

• bright white light + white powder

is co2 soluble in water?

yes

in general, metal oxides are _____ and non-metal oxides are ____

basic, acidic

CO2 - carbon dioxide 

• how formed 

• problems

• solutions

• complete combustion of c in fuel

• greenhouse gas causing global warming

• burn less fossil fuels

CO - Carbon monoxide 

• how formed 

• problems

• solutions

• incomplete combustion of C in fuel

• TOXIC

• ensure good supply of air/oxygen when burned

carbon dioxide

• formula

• % 

• properties

• uses

• CO2

• 0.03%

• unreactive

• fire extinguishers

carbon + oxygen 

• word equation

• basic or acidic

• what do you see

• carbon + oxygen -----> carbon dioxide

• acidic

• glows red

C soot/particulates

• how formed 

• problems

• solutions

• incomplete combustion of C in fuel

• blackens buildings, global dimming, breathing issues

• ensure there is a good supply of oxygen/air when burned

Argon

• formula

• % 

• properties

• uses

• Ar

• 0.9%

• very unreactive

• inside filament lightbulbs

appearance of carbon dioxide

colourless gas