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Maths Tuition Singapore – Differentiation     Please contact Angie @ 96790479 or Mr Ong @ 98639633 if you need Additional or Elementary Maths Tuition

Maths Tuition Singapore – Probability   ABCD is a square dartboard. P, Q, R and S are the midpoints of AB, BC, CD and DA respectively. W, X, Y and Z are midpoints of PQ, QR, RS and SP respectively. The score for a dart landing on each region of the dartboard is shown below. Region Score WXYZ 3 PZW or RYX 2 SZY or QWX 1 Other regions 0 (i) A dart is thrown once. What is the probability of scoring 3 points?                                     (ii) Two darts are thrown one after another. What is the probability of scoring 3 points?   Answer : (i) 1/4 , (ii) 9/32   Please contact Angie @ 96790479 or Mr Ong @ 98639633 if you need Additional or Elementary Maths Tuition

Biology Tuition Singapore – Chemicals of Life Misconception   Misconception 1 Benedict’s test can be used to detect the presence of disaccharides and monosaccharides. Correct Concept Benedict’s test can only be used to test for reducing sugars. Sucrose is a disaccharide but not a reducing sugar, and so cannot be detected using this test.     Misconception 2 We acquire fats through our diet only. Correct Concept Our body can meet most of its fat requirements by manufacturing fats from the excess carbohydrates we consume   Misconception 3 Consuming fats is bad for health as it can cause a rise in blood cholesterol levels Correct Concept Fats should be consumed in moderation. Saturated fats are bad for health because they can cause a rise in blood cholest ...

Physics Tuition Singapore – Mass,Weight and Density Misconception   Misconception 1 There is no weight acting on an astronaut who is floating in outer space while he is orbiting the Earth in a space vehicle. Correct Concept Weight acts on an astronaut who is floating in outer space while he is orbiting the Earth in a space vehicle. However, the space vehicle also moves at the same velocity as the astronaut. Thus, the astronaut seems to be stationary relative to the space vehicle. Although the astronaut and the space vehicle are in free fall, their horizontal speed is sufficiently large that they move around the Earth instead of falling to hit the ground   Misconception 2 Digital weighing machines found in supermarkets measure mass of objects placed on them. Readings are giv ...

Chemistry Tuition Singapore – Atomic Structure Misconception   Misconception 1 All elements have isotopes Correct Concept Some elements, such as beryllium, Be, fluorine, F, and phosphorus, P, do not have isotopes.   Misconception 2 No two elements have the same nucleon number. Correct Concept     Please contact Angie @ 96790479 or Mr Ong @ 98639633 if you need Secondary Pure or Combined Chemistry Tuition