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Wednesday, 15 August 2018

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Density: Saltwater Vs Fresh water

Floating on salt water and fresh water


Here is the article on Density


Is Salt water denser than fresh water? 
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Sunday, 5 August 2018

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Physics: Density, Specific gravity, Buoyancy, Upthrust and Archimedes principle

Density, Specific gravity, Buoyancy, archimedes principles


Density
 This may be defined as the mass per unit volume of an object.

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Machines: Mechanical Advantage, Velocity Ratio and efficiency formula

Mechanical Advantage, Velocity Ratio, efficiency

Machines

A machine is a device that makes work to be done easier and faster. It uses a basic concept of applying effort to overcome load.

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Thursday, 2 August 2018

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Reaction of Hydrogen Chloride with Potassium heptaoxodichromate

Hydrogen Chloride reacts with potassium dichromate

The reaction of Hydrogen Chloride and potassium heptaoxodichromate produces; chlorine, chromium(III) chloride, potassium chloride and water. 

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Wednesday, 1 August 2018

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Chemistry: Separation of iodine and Sulphur Crystals

Separation of Iodine and Sulphur Crystals
Learn how to separate Sulphur crystals and Iodine. 
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Tuesday, 31 July 2018

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Berlin Scholarship Programme 2018 for Journalists (fully funded to Berlin, Germany)

Berlin Scholarship


Application Deadline: August 9th, 2018

This is an opportunity to further your journalist career to attain greater heights.

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Sunday, 29 July 2018

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Liquid expansion: Real and apparent expansion, cubic expansivity.




Expansion of liquid; Real and apparent expansivity

Like solid, liquid expands on heating and contracts on cooling, because liquid is always held in a container, the expansion of liquid is always complicated because of the expansion of the container itself.

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Monday, 23 July 2018

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Physics: Anomalous Expansion of Water


Anomalous expansion of water

Anomalous expansion of water

This means something that is unusual. The temperature range of water from 0°C to 4°C is unlike most substance because is volume decreases as the temperature increases. 

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Monday, 16 July 2018

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Periodic table: periodic law, groups, periods

Periodic Table
Table of Contents
1) What is periodic table?
2) What is the periodic law?
3) What are Groups?
4) What are periods?
5) Families of Elements
6) Group 0 to 7 properties.









Periodic table
The periodic table is a tabular arrangement of the chemical elements, ordered by their atomic number and electron configuration. The periodic table is divided into eight (8) vertical columns known as "Groups" and eight (8) horizontal columns known as "Periods".

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Wednesday, 11 July 2018

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100% Full Scholarship to attend University of Pretoria

University of Pretoria scholarships


Application Deadline: 15 September 2018

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