Courses

Higher - Demonstrations

Unit 1
Experiment	Additional points
CCD No 2: an oscillating reaction	Use to stimulate interest at the start of the course
CCD No 12: Catalysis of the reaction between sodium thiosulphate and hydrogen peroxide	Sufficient to inform the students that during the reaction sulphuric acid will be made. Prompt for universal indicator colour change
CCD No 29: The reaction of potassium permanganate and glycerol	Use to illustrate an exothermic chemical reaction
CCD No 51: Making silicon and silanes from sand	Use to illustrate an exothermic chemical reaction . Use silicon dioxide instead of sand. A good ‘fun’ experiment too.
CCD No 44: Endothermic solid-solid reactions	Use ammonium thiocyanate if you wish to freeze the water. Use 20g of barium hydroxide to 10g of ammonium thiocyanate
CCD No 40: Thermal properties of water
CCD No 41: The density of ice
CCD No 42: The tubeless siphon

Unit 2
Experiment	Additional points
CCD No 32: A giant silver mirror
CCD No 96: A hydrogen-oxygen fuel cell	Use when discussing alternative energy sources. A free video on a hydrogen powered car is available from http://www.bmweducation.co.uk
CCD No 28: The alcohol ‘gun’	Ensure thin walled ‘pop’ bottles are used. DO NOT use Oxygen in the bottle with the alcohol
CCD No 35: The hydrogen rocket	Ensure thin walled ‘pop’ bottles are used

Unit 3
Experiment	Additional points
CCD No 1: A visible activated complex
CCD No 4: The equilibrium between ICl and ICl₃	Can use to show both concentration and temperature changes on the position of equilibrium
CCD No 8: The equilibrium between Co(H₂O) ₆²⁺and CoCl₄^2-	Can use to show both concentration and temperature changes on the position of equilibrium
CCD No 10: Strong and weak acids: The common ion effect	Observe heights of foam and rates of reactions. Volumes of gases and pH not to be calculated.
CCD No 12: Catalysis of the reaction between sodium thiosulphate and hydrogen peroxide	Sufficient to inform the students that during the reaction sulphuric acid will be made. Prompt for universal indicator colour change
CCD No 20: The hydrogen peroxide/potassium iodide clock reaction
CCD No 39: Equilibria involving carbon dioxide and their effect on the acidity of soda water
CCD No 69: The ‘breathalyser’ reaction
CCD No 70: The electrolysis of water - exploding bubbles of oxygen and hydrogen
CCD No 81: The equilibrium between nitrogen Dioxide and dinitrogen tetroxide
CCD No 83: The reaction of hydrogen peroxide and potassium permanganate - cannon fire’
CCD No 88: Catalysts for the thermal decomposition of potassium chlorate
CCD No 97: Light sensitive silver salts