Sand, Loam and Clay soil samples. Image credit ayersbasementsystems.com ZIMSEC O Level Combined Science Notes: Comparing the air content of soils
Materials: small tin cans, measuring cylinders, water, samples of clay, sandy and loam soils, hammer, nail
Method
The structure of atoms. Image credit enotes.com ZIMSEC O Level Combined Science Notes: Structure of atoms
Types of stresses that affect beams. The arrows show the direction of force. ZIMSEC O Level Combined Science Notes: Stress in beams
ZIMSEC O Level Combined Science Notes: The reactions of metals and water
Household goods that are bases. Image credit MediaWiki ZIMSEC O Level Combined Science Notes: Introduction to Bases
Molten cast iron. Image credit engineering.com ZIMSEC O Level Combined Science Notes: Cast iron and the oxygen lance process
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Rusting iron nails. Image credit corrosionist.com ZIMSEC O Level Combined Science Notes: Experiment: Investigating the corrosion of plated of plated iron
Aim: To investigate the corrosion of iron
Materials: ferroxyl indicator (turns blue when iron rusts), iron nails, sand paper, magnesium ribbon, zinc, copper, five test tubes, paint
Method
Raw Coke. Image credit MedialWiki ZIMSEC O Level Combined Science Notes: The manufacture of coke at Hwange
Demostrating static electricity using a comb. Image credit alinasadventuresinhomemaking.com ZIMSEC O Level Combined Science Notes: Electrostatics/Static Electricity
A simple cell in action ZIMSEC O Level Combined Science Notes: Experiment: Changing chemical energy into electrical energy
Aim: To change chemical energy into electrical energy using a simple cell
Materials: 10 cm magnesium ribbon, strip of copper foil, dilute sulphuric acid/ethanoic acid, ammeter/lamp/torch bulb,connecting leads with crocodile clips, […]
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