1. Starter How many atoms? 1. H2SO4 2. CaCO3 3. NaF2 4. Li2O 5. MgOH
EXT – Are there more oxygen atoms in 200 molecules of H2O or 55 molecules of MgSO4?
How many atoms? 1. H2SO4 2. CaCO3 3. NaF2 4. Li2O 5. MgOH

2. Starter
How many atoms? 1. H2SO4 2. CaCO3 3. NaF2 4. Li2O 5. MgOH

3. Starter
How many atoms? 1. H=2 S=1 O=4 2. CaCO3 3. NaF2 4. Li2O 5. MgOH

4. Starter
How many atoms? 1. H=2 S=1 O=4 2. Ca=1 C=1 O=3 3. NaF2 4. Li2O 5. MgOH

5. Starter
How many atoms? 1. H=2 S=1 O=4 2. Ca=1 C=1 O=3 3. Na=1 F=2 4. Li2O 5. MgOH

6. Starter
How many atoms? 1. H=2 S=1 O=4 2. Ca=1 C=1 O=3 3. Na=1 F=2 4. Li=2 O=1 5. MgOH

7. Starter
How many atoms? 1. H=2 S=1 O=4 2. Ca=1 C=1 O=3 3. Na=1 F=2 4. Li=2 O=1 5. Mg=1 O=1 H=1

8. Learning Objectives
TWWL – about word equations – Label a word equation – Describe the key features of a word equation – Form word equations from information

9. What does the term ‘combustion’ mean?

10. What is the difference between using a yellow and a blue flame?
Combustion
What is the difference between using a yellow and a blue flame?

11. Which flame is more efficient?
Combustion
Which flame is more efficient?

12. Half the class are going to heat water with a blue flame.
Combustion
Half the class are going to heat water with a blue flame.

13. Half the class are going to heat water with a safety flame.
Combustion
Half the class are going to heat water with a safety flame.

14. Which is faster to bring to boil? What else do you notice?
Combustion
Which is faster to bring to boil? What else do you notice?

15. Combustion
During complete combustion, methane and oxygen react together to produce carbon dioxide and water.

16. Which is Correct? methane + oxygen  carbon dioxide + water
During complete combustion, methane and oxygen react together to produce carbon dioxide and water.
methane + oxygen  carbon dioxide + water
carbon dioxide + water  methane + oxygen
methane  oxygen + carbon dioxide + water
methane + oxygen + carbon dioxide  water

17. Which is Correct? methane + oxygen  carbon dioxide + water
During complete combustion, methane and oxygen react together to produce carbon dioxide and water.
methane + oxygen  carbon dioxide + water
carbon dioxide + water  methane + oxygen
methane  oxygen + carbon dioxide + water
methane + oxygen + carbon dioxide  water

18. Combustion
During incomplete combustion, methane and oxygen react together to produce carbon monoxide, carbon and water.

19. Combustion methane + oxygen + carbon  carbon monoxide + water
During incomplete combustion, methane and oxygen react together to produce carbon monoxide, carbon and water.
methane + oxygen + carbon  carbon monoxide + water
carbon monoxide + water + carbon  methane + oxygen
methane + oxygen  carbon monoxide + carbon + water
methane + oxygen + carbon monoxide  water + carbon

20. Combustion methane + oxygen + carbon  carbon monoxide + water
During incomplete combustion, methane and oxygen react together to produce carbon monoxide, carbon and water.
methane + oxygen + carbon  carbon monoxide + water
carbon monoxide + water + carbon  methane + oxygen
methane + oxygen  carbon monoxide + carbon + water
methane + oxygen + carbon monoxide  water + carbon

21. Word Equations Complete the word equation worksheet!
EXT – Describe and explain the results from the experiment.
Complete the word equation worksheet!

22. Word Equations

23. Word Equations
equations

24. Word Equations
equations
chemical

25. Word Equations
equations
chemical
reactants

26. Word Equations
equations
chemical
reactants
left

27. Word Equations
equations
chemical
reactants
left
products

28. Word Equations
equations
chemical
reactants
left
products
right

29. Word Equations Reactants Products chemical When two or more different
things are added together
It shows when a reaction has
occurred and new products have been formed.

30. Word Equations chemical
They have written the symbol instead of the word
They have written an equals sign instead of an arrow

31. Word Equations EASIER HARDER
EXT – Can you write a symbol equation for the reaction between hydrogen (H2) and oxygen (O2) to form water?
EASIER
HARDER

32. Easier 1) oxygen + magnesium  magnesium oxide
2) sulfuric acid + zinc  zinc sulfate + hydrogen
3) hydrogen + oxygen  water
4) nitric acid + lithium hydroxide  lithium nitrate + water
5) phosphoric acid + copper carbonate  copper phosphate + water + carbon dioxide
6) calcium carbonate  calcium oxide + carbon dioxide

33. Harder
1) methane + oxygen  carbon dioxide + water 2) lead nitrate + potassium iodide  lead iodide + potassium nitrate 3) nitrogen + oxygen  nitrogen dioxide 4) hydrochloric acid + sodium hydroxide  sodium chloride + water 5) magnesium + hydrochloric acid  magnesium chloride+ hydrogen 6) magnesium+ oxygen  magnesium oxide

34. Talk for 30 seconds!
End