Germinating seeds. Image credit hummert.com ZIMSEC O Level Combined Science Notes: Experiment: Is energy released by germinating seeds?
Aim: Determine whether energy is released when seeds are germinating.
Hypothesis: Seeds are structures produced by plants (living organisms). They respire when they are germinating.
Materials: tow insulated containers/vacuum flasks, two supporting […]
The structure of the human heart. ZIMSEC O Level Combined Science Notes: The mammal heart
Loam soil. Image credit betterground.org ZIMSEC O Level Combined Science Notes: The physical components of the soil
Sand, Loam and […]
A maize field is an example of an artificial ecosystems. Image wordpress.com ZIMSEC O Level Combined Science Notes: Artificial Ecosystems
Common types of beams and their associated forces ZIMSEC O Level Combined Science Notes: An introduction to Beams and their types
ZIMSEC O Level Combined Science Notes: The reactions of metals and water
ZIMSEC O Level Combined Science Notes: Experiment: The corrosion of metals by acids
Aim: Investigating the corrosion of some metals by acids
The corrosion of metals by acid gives off hydrogen gas
Materials: 5 test tubes, dilute hydrochloric acid, granulated zinc, iron fillings/iron nail, copper foil, […]
ZIMSEC O Level Combined Science Notes: Extraction of iron: The blast furnace
The structure of a blast furnace. Image credit s-cool.co.uk
Nickel and Chrome plate. Image credit 1911forum.com ZIMSEC O Level Combined Science Notes: Experiment Chrome plating a nickel cathode
Aim: To chrome plate a nickel cathode
Materials: nickel-plated electrode, lead electrode, beaker, chromic acid
Method
Coal Mining at Hwange. Image credit chronicle.co.zw ZIMSEC O Level Combined Science Notes: Coal fuel
