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Bell task: Finish the word equations in the back of your book

Bell task: Finish the word equations in the back of your book. Magnesium + oxygen Calcium + oxygen Copper oxide + carbon . Starter: What do you know?. Quiz to test what you know on C1.1 and C1.2. Finished early? Start reading page. During a chemical reaction. Old bonds break

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Bell task: Finish the word equations in the back of your book

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  1. Bell task: Finish the word equations in the back of your book Magnesium + oxygen Calcium + oxygen Copper oxide + carbon

  2. Starter: What do you know? Quiz to test what you know on C1.1 and C1.2 Finished early? Start reading page

  3. During a chemical reaction • Old bonds break • New bonds form Iron + Sulphur Iron Sulpide Most compounds end in –ide if two elements bond, but if three and one of them is oxygen then they end in –ate.

  4. In chemical reactions no atoms are lost or destroyed. • The mass of the reactants is equal to the mass of the products • This is called conservation of mass. How does the diagram show that mass has been conserved in the reaction? How can you tell from the diagram that a chemical reaction took place between substance P and substance Q? Substance P is Carbon, Suggest what substance Q and R could be.

  5. What is a hydrocarbon? Atoms of hydrogen and carbon bonded together – COMPOUND c c Methane Ethane pentane

  6. carbon dioxide + + hydrocarbon oxygen  water Complete combustion of hydrocarbons Plenty of air is needed to provide enough oxygen for a hydrocarbon fuel to burn completely. The blue flame of a gas hob or a Bunsen burner is an example of complete combustion of a hydrocarbon (in this case, natural gas). What are the products of thecomplete combustion of a hydrocarbon?

  7. carbon dioxide + + propane oxygen  water Complete combustion of propane Propane is a hydrocarbon used in camping gas. It has 3 carbon atoms and 8 hydrogen atoms What is the equation for its combustion? c oxygen Carbon Dioxide Water propane

  8. Complete combustion of propane – how would you balance the equation c Step 1: Count the number of Carbons in the reactants Step 2: Make sure you have the same number in the reactants by changing the number of carbon dioxide oxygen Water propane Carbon Dioxide

  9. Complete combustion of propane – how would you balance the equation c oxygen Water propane Step 3: Count the number of hydrogen on in the reactants, and make sure there is the same number in the products by changing the number of water Carbon Dioxide

  10. Complete combustion of propane – how would you balance the equation c oxygen propane Step 4: Next look at the number of oxygen atoms on each side and make them equal. Carbon Dioxide Water

  11. Complete combustion of propane – how would you balance the equation c propane Step 4: Next look at the number of oxygen atoms on each side and make them equal. Carbon Dioxide oxygen Water

  12. Complete combustion of propane – how would you balance the equation c propane Step 5: Write as a Symbol equation Carbon Dioxide oxygen Water

  13. Complete combustion of propane – how would you balance the equation c propane C3H8 + 5O2 3CO2 +4H20 Carbon Dioxide oxygen Water

  14. Complete combustion of butane: Draw the atom diagram and write the symbol equation c Carbon Dioxide ethane Water Oxygen C1H4+ O2 CO2 +H20

  15. Complete combustion of butane: Draw the atom diagram and write the symbol equation BEWARE THERE MAY BE AN EXTRA STEP!!! c c Carbon Dioxide Water Oxygen C4H10 + O2 CO2 +H20 butane

  16. Complete combustion of butane: Draw the atom diagram and write the symbol equation c Carbon Dioxide ethane Water Oxygen C1H4+ O2 CO2 +H20

  17. Complete combustion of butane: Draw the atom diagram and write the symbol equationBEWARE THERE MAY BE AN EXTRA STEP!!! c c c c C4H10 + 13O2 8CO2 +10H20 butane Oxygen Carbon Dioxide Water

  18. Extension • Explain conservation of mass and how it is demonstrated in chemical equations ( 5 marks) Plenary

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