Safety Equipment Image credit nexomundo.com ZIMSEC O Level Combined Science Notes: Safety wear
Tomato Plant. image credit wisegeek.com ZIMSEC O Level Combined Science Notes: Plant transport and the structure of plants
Tomato plant structure. Image credit […]
Arteries, capillaries and veins. Image credit evolvingsciences.com ZIMSEC O Level Combined Science Notes: The blood vessels
Soil sedimentation test. ZIMSEC O Level Combined Science Notes: Experiment comparing the particle size of soils
Materials: samples of sandy, loamy and clay soils, 3 measuring cylinders/tall transparent containers, water
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: Experiment: The reaction of metals and water
Aim: Investigating and Observing the reactions of metals and water
Materials: calcium, magnesium, zinc, lead, iron, copper, beaker, test tubes, filter funnel, water, splint, burner, universal indicator
Some metals like calcium react with water.
Method
ZIMSEC O Level Combined Science Notes: Experiment: Investigating the gas produced by acids and carbonates
Aim: To investigate the reaction of acids and carbonates and the gas that is produced
Materials: sodium corbonate/sodium hydrogen carbonate (baking soda), dilute hydrochloric acid/vinegar, lime water/ligted splint, 2 test tubes
Acids and carbonates […]
Molten cast iron. Image credit engineering.com ZIMSEC O Level Combined Science Notes: Cast iron and the oxygen lance process
[…]
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
