Image credit arboday.org ZIMSEC O Level Combined Science Notes: End products of photosynthesis and their fate
Ticks on bull. Image credit morningagclips.com ZIMSEC O Level Combined Science Notes: Animal Parasites and diseases
The rate of transpiration is influenced by any number of things. Image credit wordpress.com ZIMSEC O Level Combined Science Notes:Factors affecting rate of transpiration
Seed germination. Image credit k8schoollessons.com ZIMSEC O Level Combined Science Notes: Reproduction in plants: Reproduction in Plants:The germination process
Testing for organisms in the soil. ZIMSEC O Level Combined Science Notes: Experiment: Testing for the presence of micro-organisms in soil
Material:2 test tubes, lime water/bicarbonate indicator, cotton thead, corks, muslin cloth or cotton material, burner
Method
Boiling water. Image credit chemistryland.com ZIMSEC O Level Combined Science Notes: Latent Heat
The iron and sulpher mixture glows when heated as it forms a compound ZIMSEC O Level Combined Science Notes: Experiment:Making a mixture and compound
Aim: To Make a mixture of iron and sulpher and change it into a compound using […]
ZIMSEC O Level Combined Science Notes: Experiment:Hydrogen as a reducing agent
Aim: To show that hydrogen can act as a reducing agent
Materials: hard glass test-tube with a small hole near the end, copper oxide, burner, cork with a short glass tube, rubber tube
Reducing copper using hydrogen
Method
The rate of reaction increases with an increase in concentration ZIMSEC O Level Combined Science Notes: Experiment: Determining how concentration affects rates of reaction
Aim: To find the effects of concentration on the rate of reaction using hydrochloric acid and sodium thiosulphate
Materials: 250cm3 beaker, […]
ZIMSEC O Level Combined Science Notes: Extraction of copper from oxides
Aim: To investigate the reduction of copper oxide using carbon
Materials: copper oxide, anhydrous sodium carbonate, charcoal block, blow pipe, burner
The reduction of copper using carbon.
Method
