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

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

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

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

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

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

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

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

What does the term ‘combustion’ mean?

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?

Which flame is more efficient? Combustion Which flame is more efficient?

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.

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.

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?

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

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

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

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

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

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

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

Word Equations

Word Equations equations

Word Equations equations chemical

Word Equations equations chemical reactants

Word Equations equations chemical reactants left

Word Equations equations chemical reactants left products

Word Equations equations chemical reactants left products right

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.

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

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

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

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

Talk for 30 seconds! End