Coke in the blast furnace = carbon atom = oxygen atom + C O2 CO2 + + C + CO2  2CO

Thermal decomposition of calcium carbonate. = carbon atom = calcium atom = oxygen atom + CaCO3  CaO + CO2

Adding water to calcium oxide = oxygen atom = hydrogen atom = calcium atom + CaO + H2O  Ca(OH)2

Adding carbon dioxide to calcium hydroxide = oxygen atom = hydrogen atom = carbon atom = calcium atom + + CaCO3

Reduction of iron oxide = carbon atom = iron atom = oxygen atom + + Fe2O3 + 3CO  2 Fe + 3CO2

Reduction of iron oxide = carbon atom = iron atom = oxygen atom + + 2Fe2O3 + 3C  4Fe + 3CO2

Combustion CH4 + 2O2  CO2 + 2H2O = carbon atom = hydrogen atom = oxygen atom + + CH4 + 2O2  CO2 + 2H2O

Acid and metal 2HCl + 2Na  2NaCl + H2 = Sodium atom = hydrogen atom = chlorine atom + + 2HCl + 2Na  2NaCl + H2

Acid and alkali HCl + NaOH  NaCl + H2O = Sodium atom = hydrogen atom = chlorine atom = Sodium atom = hydrogen atom = oxygen atom + + HCl + NaOH  NaCl + H2O

Decomposition of sodium carbonate = carbon atom = Sodium atom = oxygen atom + Na2CO3  CO2 + Na2O

Acid and carbonate Na2CO3 + HCl  2NaCl + CO2 + H2O = carbon atom = hydrogen atom = oxygen atom = Sodium atom = chlorine atom + + + Na2CO3 + HCl  2NaCl + CO2 + H2O

Acid and alkali HCl + NaOH  ? + H2O NaCl = Sodium atom = chlorine atom = oxygen atom = hydrogen atom + + HCl + NaOH  ? + H2O NaCl

C + O2  CO2 Working out masses 24/12 = 2 moles If I have 24g of carbon, what mass of carbon dioxide will I produce? C + O2  CO2 Look at the ratio of carbon to carbon dioxide (look at the big numbers only). 2 x 44 = 88g of CO2 1:1 ratio Calculate the number of moles of carbon using moles = mass/Ar Calculate the mass of CO2 using mass = moles x Mr There is a 1:1 ratio, so there are 2 moles of CO2. 24/12 = 2 moles Use the ratio to work out the number of moles of CO2.

Use the equation to calculate thee mass iron we can make if we start with 160g of Fe2O3. Fe2O3 + 3CO  2 Fe + 3CO2 2) If we start with 8g of methane, what is the mass of carbon dioxide we can produce? CH4 + 2O2  CO2 + 2H2O 3) If we have 92g of sodium, what mass of sodium chloride will we produce? 2HCl + 2Na  2NaCl + H2 If we made 112g of iron, what mass of iron oxide did we start with? 2Fe2O3 + 3C  4Fe + 3CO2

Answers 112g of iron. 22g of CO2. 234g of NaCl. 160g of Fe2O3.

Coke in the blast furnace = carbon atom = oxygen atom + C O2 CO2 + +

Thermal decomposition of calcium carbonate. = carbon atom = calcium atom = oxygen atom +

Adding water to calcium oxide = oxygen atom = hydrogen atom = calcium atom +

Adding carbon dioxide to calcium hydroxide = oxygen atom = hydrogen atom = carbon atom = calcium atom + + CaCO3

Reduction of iron oxide = carbon atom = iron atom = oxygen atom + + Fe2O3 + 3CO  2 Fe + 3CO2

Reduction of iron oxide = carbon atom = iron atom = oxygen atom + + 2Fe2O3 + 3C  4Fe + 3CO2

Combustion = carbon atom = hydrogen atom = oxygen atom + +

Acid and metal = Sodium atom = hydrogen atom = chlorine atom + +

? Acid and alkali NaCl HCl + NaOH  ________ + H2O = Sodium atom = hydrogen atom = chlorine atom = Sodium atom = oxygen atom ? + + NaCl HCl + NaOH  ________ + H2O

Adding carbon dioxide to calcium hydroxide = oxygen atom = hydrogen atom = calcium atom = sulphur atom ? + + CaSO4 CaO + H2SO4  ________ + H2O

? Combustion H2O + CO2  _________ H2CO3 = carbon atom = hydrogen atom = oxygen atom ? + H2CO3 H2O + CO2  _________

Combustion = carbon atom = oxygen atom ? + O2 C + _____  CO2

Thermal decomposition of calcium carbonate. = carbon atom = calcium atom = oxygen atom ? + ? CaCO3  CaO + CO2

Adding water to calcium oxide. = carbon atom = calcium atom = oxygen atom = hydrogen atom ? + ? CaO + H2O  Ca(OH)2

Adding water to calcium oxide. = carbon atom = calcium atom = oxygen atom = hydrogen atom ? + + ? Ca(OH)2 + CO2  CaCO3 + H2O

Decomposition of sodium carbonate = carbon atom = Sodium atom = oxygen atom +

Acid and carbonate = carbon atom = hydrogen atom = oxygen atom = Sodium atom = chlorine atom + + +