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