Long term and short term sources of finance
Sources of finance can be long term or short term. Image credit eurweb.com ZIMSEC O Level Business Studies Notes: Long term and short term sources of finance
Sources of finance can be long term or short term. Image credit eurweb.com ZIMSEC O Level Business Studies Notes: Long term and short term sources of finance
ZIMSEC O Level Combined Science Notes: Experiment: Reducing Iron oxide using aluminium
Aim: To remove oxygen from iron oxide using aluminum
Materials: sand, tin can, safety screen, magnesium ribbon and magnesium powder, wooden splint, aluminum powder, dry iron oxide, barium preoxide
Reducing iron oxide using aluminum oxide
Method
Concentration varies directly with the rate of reaction ZIMSEC O Level Combined Science Notes: Experiment: Investigating the effects of concentration on marble chips
Aim: To investigate the effect of concentration on the reaction between marble chips and hydrochloric acid
Materials : conical flask/glass jam jars, measuring cylinder, […]
ZIMSEC O Level Combined Science Notes: Experiment: Separating copper from its oxides
Aim: To separate copper from its oxide ores
Materials: copper oxide, iron nail, dilute sulphuric acid, filter funnel, 2 beakers, stirring rod, filter paper, burner
Extracting copper from copper oxide
Method
ZIMSEC O Level Combined Science Notes: The production of sulphuric acid
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 […]
ZIMSEC O Level Combined Science Notes: Experiment: Finding the resistance of a resistor using a voltmeter
Aim: To find the resistance of a resistor in a circuit using voltmeter
Materials: cells, ammeter, resistor,switch, leads with crocodile clips
Finding Resistance
Method
Hwange Power Plant. Image credit chronicle.co.zw ZIMSEC O Level Combined Science Notes: Introduction:Motors and generators
Rectangular foam rubber can be used to show the effects of forces. Image credit shopify.com ZIMSEC O Level Combined Science Notes: Experiment: The effect of different forces on sponge rubber
Aim: To show the effects of forces on […]
Reinforced concrete. Image credit surfcivil.blogspot.com ZIMSEC O Level Combined Science Notes: Metal and metal alloy properties and their construction uses