Fermentation of glucose ZIMSEC O Level Combined Science Notes: Experiment: Determining the best conditions for the production of ethanol
Aim: To determine the best conditions for ethanol production
Materials: 5% glucose solution, 20% glucose solution, yeast, sodium hydroxide solution, mealie meal, dilute hydrochloric acid, thermometer, conical flask, cork, glass tube, test tube, […]
Carbon dioxide extinguishes flames ZIMSEC O Level Combined Science Notes: Experiment: Demonstrating that carbon dioxide extinguishes a burning flame
Aim: to show that carbon dioxide extinguishes a flame
Materials: 3 different sized candles, vinegar, baking soda, beaker or plastic bottle, shallow dish
Method
ZIMSEC O Level Combined Science Notes: Fuel efficiency
Testing fuel to determine its energy content ZIMSEC O Level Combined Science Notes: Experiment:investigating fuel efficiency
Aim: To determine the amount of heat liberated when different liquid fuels burn
Materials: 2 spirit burners, wooden block, clamp and stand, meths, paraffin, thermometer, draught shields, clamp, beaker, water, tripod […]
Most cars use fuel engine. Image credit ecurrent.fit.edu/blog/ ZIMSEC O Level Combined Science Notes: Fuel Engines
A carburettor is an important part of the Petrol engine. Image credit MediaWiki ZIMSEC O Level Combined Science Notes: The carburetor
Honda Diesel Engine. Image credit forum.cardekho.com ZIMSEC O Level Combined Science Notes: The Diesel engine
Engen Garage. Image credit chronicle.co.zw ZIMSEC O Level Combined Science Notes: Types of fuel
Petrol vs Diesel Engines. Image credit carblogindia.com ZIMSEC O Level Combined Science Notes: Efficiency: Diesel vs Petrol engines
Burning Fuels ZIMSEC O Level Combined Science Notes: Experiment: Burning fuels
Aim: To burn and investigate the nature of fuels
Materials: methylated spirits/alcohol, candle, meths burner, bunsen burner, paraffin, tin lid or porcelain dish, tongs
Method
