Rubber monomers, condition for production of rubber, Vulcanization of rubber- physical chemistry
Rubber Monomers Important conjugated dienes used in synthetic rubbers include isoprene (2-methyl-1,3-butadiene), 1,3-butadiene, and chloroprene (2-chloro-1,3-butadiene). Condition for the reaction leading to formation of ... Read More
Properties of Gama, beta and alpha particles
Types of radiations There are three types of radiations given by radioactive substances. They all cause certain substances, such as zinc sulphide, to luminesce, and ... Read More
Properties of Gama particle -physical chemistry
properties of gamma particles These uncharged rays are similar to X-rays they have high penetrating power; being able to pass through 0.1m of metal. have ... Read More
Properties of beta particles-physical properties
Properties of beta particle negatively charged deflected toward positive electric field have medium penetrating power ionize gases they pass through Sponsored by The Science Foundation ... Read More
Properties of Alpha particles-physical chemistry
Properties alpha particles positively charged helium ions ionize gases they pass through deflected towards negative electric field have low penetrating power Read More
Methods of separating azeotropic mixture – physical chemistry
Adding a substance that reacts and removes one component. e.g. CaO reacts and removes water from azeotrope of ethanol and water distillation with a third ... Read More
Reasons why azeotropes are not compounds- physical chemistry
Azeotropes are not compounds because they can be separated by physical means such as adsorption, fractional crystallization components react independently for example water in rectified ... Read More
Ratios – upper primary mathematics
Ratio A ratio indicates how many times one number contains another. For example, if there are eight oranges and six lemons in a bowl of fruit, then ... Read More
Currency exchange-primary mathematics
Currency exchange Banks and forex bureau buy and sell currencies of different cuntries at rate different rates according to their values. To make profit, they ... Read More
Lowest Common Multiple (LCM) and Greatest Common Factor (GCF) – primary mathematics
Lowest common multiple (LCM) The Least Common Multiple (LCM) is also referred to as the Lowest Common Multiple (LCM) and Least Common Divisor (LCD). For ... Read More
Trading, profit, loss, discount and shopping – primary mathematics
Trading A trader is a person who buys commodities and sells them at a profit. The profit is the difference between the selling and cost ... Read More