Ordinary Level Notes Archives - Page 151 of 180 - Free ZIMSEC & Cambridge Revision Notes

Experiment: Separating copper from its oxides
Gallery
Experiment: Separating copper from its oxides

Notes, O Level Science Notes, Ordinary Level Notes

Experiment: Separating copper from its oxides

By garikaib|2025-02-12T09:30:43+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

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

Place a small amount of copper oxide in a […]

Comments Off

The Manufacture of sulphuric acid
Gallery
The Manufacture of sulphuric acid

Notes, O Level Science Notes, Ordinary Level Notes

The Manufacture of sulphuric acid

By garikaib|2025-02-12T08:56:03+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

ZIMSEC O Level Combined Science Notes: The production of sulphuric acid

Sulphuric acid is produced using the Contact process
In Zimbabwe there is a sulphuric acid production plant at Zimphos in Harare
Sulpher or iron pyrites (iron sulphide) is roasted to form sulphur dioxide
The word equation for roasting iron pyrites is:
\text{iron sulphide+oxygen}\rightarrow\text{iron oxide+sulpher dioxide}
The word […]

Comments Off

Experiment:investigating fuel efficiency

By garikaib|2025-02-12T09:11:59+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

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 […]

Comments Off

Experiment: Finding the resistance of a resistor using a voltmeter
Gallery
Experiment: Finding the resistance of a resistor using a voltmeter

Notes, O Level Science Notes, Ordinary Level Notes

Experiment: Finding the resistance of a resistor using a voltmeter

By garikaib|2025-02-12T09:26:37+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

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

Set up the circuit as shown above
Close the switch
Read and record values of the […]

Comments Off

Introduction:Generators and Motors

By garikaib|2025-02-12T09:43:00+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

Hwange Power Plant. Image credit chronicle.co.zw ZIMSEC O Level Combined Science Notes: Introduction:Motors and generators

Due to their nature batteries and cells produce a limited amount of electrical power
A lot of the electricity used in homes and industries comes from generators
Generators convert kinetic […]

Comments Off

The effect of different forces on sponge rubber

By garikaib|2025-02-12T09:07:42+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

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 […]

Comments Off

Reinforced concrete and stone properties and structures

By garikaib|2025-02-12T09:22:52+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

Reinforced concrete. Image credit surfcivil.blogspot.com ZIMSEC O Level Combined Science Notes: Metal and metal alloy properties and their construction uses

Often building materials are combined when building a structure
The most common such mixture is reinforced concrete
It is a mixture of steel and concrete
Steel is […]

Comments Off

Experiment:Finding the mechanical advantage of an inclined plane
Gallery
Experiment:Finding the mechanical advantage of an inclined plane

Notes, O Level Science Notes, Ordinary Level Notes

Experiment:Finding the mechanical advantage of an inclined plane

By garikaib|2025-02-12T09:40:29+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

ZIMSEC O Level Combined Science Notes: Experiment:Finding the mechanical advantage of an inclined plane

Aim: Finding the Mechanical Advantage of an inclined plane

Materials: 1m long plank, sandpaper, bricks. cotton reel, nails, thick steel wire, wood block (smoothed on the underside) weights/tin and sand, pliers, string, spring balance/scales

Finding the mechanical of an inclined plane Finding the […]