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Cambridge IGCSE Combined Science practical skills

The practical skills you can be asked about in the exam. Each sheet has the method, variables, risk assessment and a results table to fill in, with example results and exam questions, and prints as a PDF. Paper 5 (Practical Test) or Paper 6 (Alternative to Practical) tests these skills across biology, chemistry and physics and is worth 20% of the IGCSE.

1Factors that affect diffusion (agar cubes)Movement into and out of cells · Diffusion · spec B3.1.4 PDF9 pagesRevision noteOpen sheet
2Plant tissue in solutions of different concentrationMovement into and out of cells · Osmosis · spec B3.2.3 PDF9 pagesRevision noteOpen sheet
3Effect of temperature and pH on enzyme activity (amylase)Enzymes · Enzymes · spec B5.1.2 PDF9 pagesRevision noteOpen sheet
4What a plant needs for photosynthesisPlant nutrition · Photosynthesis · spec B6.1.4 PDF8 pagesRevision noteOpen sheet
5Factors affecting the rate of photosynthesisPlant nutrition · Photosynthesis · spec B6.1.7 PDF9 pagesRevision noteOpen sheet
6Light, dark and gas exchange in an aquatic plantPlant nutrition · Photosynthesis · spec B6.1.8 PDF7 pagesRevision noteOpen sheet
7Temperature, wind speed and transpirationTransport in plants · Transpiration · spec B8.3.2 PDF9 pagesRevision noteOpen sheet
8Physical activity and heart rateTransport in animals · The heart · spec B9.2.4 PDF8 pagesRevision noteOpen sheet
9Physical activity, rate and depth of breathingGas exchange in humans · Gas exchange in humans · spec B11.1.2 PDF9 pagesRevision noteOpen sheet
10Conditions needed for germinationReproduction · Sexual reproduction in plants · spec B14.1.5 PDF8 pagesRevision noteOpen sheet
·In the revision notesMagnification and actual sizeOrganisation of the organism · Size of specimens · spec B2.2.1, B2.2.2, B2.2.3 Read
·In the revision notesFood testsBiological molecules · Biological molecules · spec B4.1.3 Read
·In the revision notesRespiration and the uses of energyRespiration · Respiration · spec B12.1.1 Read
·In the revision notesStructure of an insect-pollinated flowerReproduction · Sexual reproduction in plants · spec B14.1.1, B14.1.2 Read
·In the revision notesPlanning an investigation: variables, controls, range and repeatsExperimental skills · Practical skills · spec S1 Read
·In the revision notesBiological drawings and measuring specimensExperimental skills · Practical skills · spec S4 Read
·In the revision notesIndicators and tests: limewater, hydrogencarbonate, universal indicator and litmusExperimental skills · Practical skills · spec S6 Read