Melting ice. Image credit flemox.com ZIMSEC O Level Combined Science Notes: Changes in state
When a solid item is heated the forces of attraction between the particles become weaker
as a result the particles move more quickly
[…]
Image credit erekocynigit.com ZIMSEC O Level Principles of Accounts Notes: Trading and Profit and Loss Account Example
From the following trial balance of S Madondo, extracted after one year’s trading, prepare a trading and profit and loss account for the year ended 31 December 20X6. A balance sheet […]
The British Explorer Thomas Baines who signed the Baines concession. Image credit artexpertwebsite.comZIMSEC O Level History Notes:The Colonisation of Zimbabwe:A List of the treaties signed by Lobengula and the whites in the 19th century
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 […]
Magnesium reacts with steam ZIMSEC O Level Combined Science Notes: Experiment: The reaction of metals and water
Aim: To investigate and observe the reaction of magnesium and water
Materials: magnesium ribbon, hard glass test tube, water, sand, 2 burners, short glass tube, splint, clamp stand
Method
Household goods that are bases. Image credit MediaWiki ZIMSEC O Level Combined Science Notes: Introduction to Bases
Molten cast iron. Image credit engineering.com ZIMSEC O Level Combined Science Notes: Cast iron and the oxygen lance process
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Rusting iron nails. Image credit corrosionist.com ZIMSEC O Level Combined Science Notes: Experiment: Investigating the corrosion of plated of plated iron
Aim: To investigate the corrosion of iron
Materials: ferroxyl indicator (turns blue when iron rusts), iron nails, sand paper, magnesium ribbon, zinc, copper, five test tubes, paint
Method
Raw Coke. Image credit MedialWiki ZIMSEC O Level Combined Science Notes: The manufacture of coke at Hwange
Demostrating static electricity using a comb. Image credit alinasadventuresinhomemaking.com ZIMSEC O Level Combined Science Notes: Electrostatics/Static Electricity
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