BLOG

Physics Tuition Singapore Secondary Science Tuition – Chemical effect – Electroplating   Chemical effect A chemical change caused by electricity is called electrolysis An electrolyte is a liquid or a solution which can conduct electricity. The electrolyte undergoes chemical change when electricity passes through it. Electrodes are electrical contacts which allows electric current to leave and to enter the electrolyte. Electrolysis is widely used in electroplating and in the extraction of metals.   Electroplating In electroplating, an object is coated with a layer of metal. The object to be coated is connected to the negative terminal of the power supply. The metal to coat an object is connected to the positive terminal of the power supply. For exampleTo coat a spoon w ...

Chemistry Tuition Singapore Secondary Science Tuition – Separating Mixtures Solid – Solid   SEPARATING MIXTURES There are physical methods which can be used to separate a mixture to obtain pure substances again. The choice for selecting a suitable physical method is determined by the nature of the mixture. Solid-solid Two different solid substances mixed together such as sand with salt or iron powder with sulfur Solid-liquid Salt solution, sugar solution Liquid-liquid Alcoholic solution, crude oil Quantity of components Sample containing minute amount of components such as food dyes, food colouring and inks   SEPARATING SOLID-SOLID MIXTURES Magnetic attraction This technique uses magnets to separate magnetic substances from a mixture. Examples of magnetic substances a ...

Economics Tuition Singapore A Level H2 H1 Economics Tuition – Consumption Expenditure in Singapore   Spending by Singapore-based MasterCard cardholders increased 12.4 percent to USD797.4 million in the first month of the Great Singapore Sale (GSS) this year (31 May to 30 June 2013) compared to the same period last year Discuss whether increasing consumption expenditure in Singapore is desirable for the economy.   SUGGESTED ANSWER Explain how an increase in consumption expenditure affects the economy (use AD/AS analysis or Y=AE approach) Increase in autonomous consumption à increase in aggregate demand (rightward shift of the AD curve) à possible change in the equilibrium level of national income and general price level. Whether an increase in consumption is desirable or oth ...

General Paper Tuition Singapore A level General Paper Tuition – To what extent is social media used for what is trivial, rather than what is important? Topic: Uses of social media Issue: Whether social media has been used/is being used more for what is trivial or what is important Context: Global Keywords: Trivial (having little value or importance), Important (necessary, meaningful, of great value)   Social media acts as a form of self-expression and is influencing how we share our personalities. However, there are people who abuse these platforms for their own amusement at the expense of others. Human beings are social creatures, and therefore, are dedicated to creating and participating in “social networks” in order to express and share their ideas. With the rise of the internet, ...

Math Tuition Singapore A Level H2 H1 Math Tuition – Complex Number Loci     Please contact Angie @ 96790479 or Mr Ong @ 98639633 if you need Math Tuition A level H2 H1 Mathematics Tuition Singapore.