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
ZIMSEC O Level Combined Science: Carbon Dioxide and Photosynthesis
Aim: To test whether carbon dioxide is necessary for photosynthesis.
Materials: Potted green plants, potassium hydroxide solution (soda lime), two polythene bags/two bell jars, string, apparatus and reagents for the start test.
Image credit schule-bw.de ZIMSEC O Level Combined Science Notes: Amylase enzyme experiment
Experiment
Materilas: 1% amylase enzyme/saliva, 2% startch solution, visking tubing, reagents to test for starch and sugar, beakers.
Method A: Visking Tubing.
Peeled potatoes. Image credit alsalamgroup.com ZIMSEC O Level Science Notes: Experiment: Testing osmosis in living plant tissue
Materials: potatoes, knife or blade, distilled water, sugar or salt, three containers,weighing balance.
Method
Prepare three pieces of peeled potato. Each block must be […]
Fertilisation of a flower. Image credit studyblue.com ZIMSEC O Level Combined Science Notes: Reproduction in plants: Reproduction in Plants:Development after fertilization
