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Unit 7
Experiment 7.1 Testing for oxygen and carbon dioxide
Experiment 7.2 Testing for water and water vapour
Experiment 7.3 Testing for starch in green leaves
Experiment 7.4 Testing for oxygen produced by photosynthesis
Experiment 7.5 Investigating the factors necessary for photosynthesis
Experiment 7.6 Heating a small amount of water by burning food
Experiment 7.7 Gas exchange in plants
Experiment 7.8 Observing stomata under a microscope
Experiment 7.9 Comparing the oxygen and carbon dioxide contents of inhaled air and exhaled air
Experiment 7.10 Comparing the water vapour content of inhaled air and exhaled air
Experiment 7.11 Comparing the temperature of inhaled air and exhaled air
Experiment 7.12 Studying the gas exchange in mealworms
Experiment 7.13 Observing the structure of pig's lungs
Experiment 7.14 Observing how smoking affects the pig's lungs
Unit 8
Experiment 8.1 Finding the conditions needed for electricity to flow
Experiment 8.2 Which objects allow electricity to flow?
Experiment 8.3 Studying how a switch works
Experiment 8.4 Setting up circuits based on circuit diagrams
Experiment 8.5 Using an ammeter to measure an electric current
Experiment 8.6 Observing the heating effect of electric current
Experiment 8.7 Observing the magnetic effect of electric current
Experiment 8.8 Using a voltmeter to measure voltages of electric cells
Experiment 8.9 Finding out how voltage affects the current in a circuit
Experiment 8.10 Do different electrical conductors conduct electricity equally well?
Experiment 8.11 Studying the effect of resistance on the current in a circuit
Experiment 8.12 Finding out the factors that affect the resistance of a conducting wire
Experiment 8.13 Studying how a rheostat works
Experiment 8.14 Studying the difference between series and parallel circuits
Experiment 8.15 Studying the currents and voltages in a series circuit
Experiment 8.16 Studying the currents and voltages in a parallel circuit
Experiment 8.17 Observing the force on a current-carrying copper rod
Experiment 8.18 Studying a three-pin plug and wiring the plug
Experiment 8.19 Should electrical appliances be connected in parallel or in series?
Experiment 8.20 Studying the effect of added devices when connected in parallel
Experiment 8.21 What is a short circuit?
Experiment 8.22 Using a fuse to protect a circuit
Experiment 8.23 Finding the cost of electricity used by an electric kettle to boil water