Apparatus used in the electrolysis of water. Image credit youtube.com ZIMSEC O Level Combined Science Notes: Experiment: Electrolysis of water
Aim: To produce hydrogen gas using the electrolysis of water
Materials: beaker, test tubes, carbon electrodes, water, concentrated sulphuric acid, battery/8-12v power supply, connecting […]
Distillation of alcohol. Image credit bbc.co,uk ZIMSEC O Level Combined Science Notes: Experiment: The distillation of ethanol
Aim: To concentrate alcohol using the distillation process
Materials: thermometer, clamp stands, rubber bungs, round bottomed flask, fractionating column. condenser with rubber tubing, watch-glass or tin lid, porcelain chips or clean dry sand
A simple circuit diagram ZIMSEC O Level Combined Science Notes: Current electricity
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Cells in series ZIMSEC O Level Combined Science Notes: Cells in a series
Safe use of electricity .Image credit keyword-suggestions.com ZIMSEC O Level Combined Science Notes: Electrical safety
A wooden house. Image credit designrulz.com ZIMSEC O Level Combined Science Notes:Timber properties and timber structures
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ZIMSEC O Level Combined Science Notes: Machines: The inclined plane
Burning food to to test its energy content ZIMSEC O Level Combined Science Notes: Experiment: Food and Energy
Aim: Comparing the energy value of foods
Materials: burners, small containers/beakers to hold the water, food holders, thermometers, different types of starchy and fatty foods
Method
Image credit raanetwork.org ZIMSEC O Level Combined Science Notes: Male Reproductive system
Male reproductive system. Image credit goldiesroom.org
Image credit idealscounseling.orgZIMSEC O Level Combined Science Notes: Population Dynamics
Factors affecting population change
