April 2016

Extraction of iron: The blast furnace

By |2022-09-15T12:39:22+02:00April 27th, 2016|Notes, O Level Science Notes, Ordinary Level Notes|

ZIMSEC O Level Combined Science Notes: Extraction of iron: The blast furnace

  • After iron ore is mined it is send to the blast furnace
  • Iron is extracted from its ore in a blast furnace

 

The structure of a blast furnace. Image credit s-cool.co.uk

The structure of a blast furnace. Image credit s-cool.co.uk
    […]

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The metal iron

By |2022-09-15T12:39:23+02:00April 24th, 2016|Notes, O Level Science Notes, Ordinary Level Notes|

Iron mining in Zimbabwe. Image credit miningzimbabwe.com

Iron mining in Zimbabwe. Image credit miningzimbabwe.com ZIMSEC O Level Combined Science Notes: The metal iron
  • Iron in mined mostly in South-Central Zimbabwe
  • Haemitite (iron ore) deposits can be found at Redcliff and Buchwa
  • There are other deposits in other places but the […]

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March 2016

Experiment: The reaction of metals with dilute Hydrochloric acid

By |2022-09-15T12:39:37+02:00March 31st, 2016|Notes, O Level Science Notes, Ordinary Level Notes|

Copper does not react with hydrochloric acid. Image credit fphoto.com

Copper does not react with hydrochloric acid. Image credit fphoto.com ZIMSEC O Level Combined Science Notes:  Experiment: The reaction of metals with dilute Hydrochloric acid

Aim: To examine the reactivity of metals with dilute hydrochloric acid

Materials: 5 test tubes, dilute hydrochloric acid, magnesium, zinc, […]


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Heating metals in air

By |2022-09-15T12:39:41+02:00March 30th, 2016|Notes, O Level Science Notes, Ordinary Level Notes|

 ZIMSEC O Level Combined Science Notes: Heating metals in air
  • Some metals react with oxygen in the air at ordinary (room) temperature
  • Others only react with oxygen if they are heated in air
  • They may do this readily and release large amounts of energy in the process
  • Some metals hardily react at all even at very high temperatures
  • […]


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Common metals and their uses

By |2022-09-15T12:39:44+02:00March 18th, 2016|Notes, O Level Science Notes, Ordinary Level Notes|

Copper wires. Image credit globalminingobserver.com

Copper wires. Image credit globalminingobserver.com ZIMSEC O Level Combined Science Notes: Common metals and their uses
  • Common metals include:
  • aluminium
  • iron and
  • copper

Copper

  • is a soft, malleable and ductile metal with very high heat and electrical conductivity
  • has a reddish-orange color
  • It is used in thermostat, in electrical wiring
  • It is also […]

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Experiment: Testing the physical properties of metals and non-metals

By |2022-09-15T12:39:44+02:00March 18th, 2016|Notes, O Level Science Notes, Ordinary Level Notes|

Common non-metals. Image credit blogspot.com

Common non-metals. Image credit blogspot.com ZIMSEC O Level Combined Science Notes: Experiment: Testing the physical properties of metals and non-metals

Aim:To examine the physical properties of metals and non-metals

Materials: aluminium foil, carbon rod taken from a torch cell, copper foil, gas jars of oxygen, hydrogen; sulpher, […]


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Properties of Nonmetals vs metals

By |2022-09-15T12:39:45+02:00March 18th, 2016|Notes, O Level Science Notes, Ordinary Level Notes|

Common metal objects. Image credit blogspot.com

Common metal objects. Image credit blogspot.com ZIMSEC O Level Combined Science Notes: Experiment: Properties of Metals and Non-Metals
  • Elements can be divided into two groups:
  • Metals and Non-metals
  • Examples of metals are: copper, zinc, iron, gold, silver, chrome, lead and tin
  • Almost all metals have certain properties that makes them […]

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