Magic ink

Chemistry tuition classes in Miracle Learning Centre are very useful. If you do not understand chemistry, you must definitely attend the chemistry tuition class at Miracle Learning Centre. Let us learn about magic link in this chemistry tuition lesson.
Help your kids discover the magic of the amazing science experiment and kids activity that creates magic ink. Watch their eyes widen in wonder as they uncover the secrets behind the amazing possibilities of science!
Number of players: 1+
What you need: • lemon • water • small plate • toothpick • white paper • lamp

Activity:

Squeeze the lemon juice into a small plate with a few drops of water and mix with a spoon. Dip the toothpick into the lemon juice mix and write a message on the white sheet of paper. When it dries the writing will be invisible. Heat the paper by holding it over a lamp with the writing side down. The invisible ink writing will slowly turn brown and appear on the page! http://www.miraclelearningcentre.com

Miracle Learning Centre Chemistry Tuition Question on Qualitative Analysis . (O Level Chemistry Tuition/ IP Chemistry Tuition)

1. What gas is formed when aluminium powder is heated with alkaline aqueous sodium nitrate? A. oxygen B. nitrogen C. ammonia D. nitrogen dioxide

2. A solid is insoluble in water but dissolves in aqueous acid and in aqueous alkali without evolution of a gas in either case. What could the solid be? A. copper(II) carbonate B. copper(II) hydroxide C. zinc carbonate D. zinc hydroxide

3. Which one of the following solutions, when mixed, would give a visible change? A. Kl(aq) and NaOH(aq) B. CuSO4(aq) and MgCl2(aq) C. FeCl3(aq) and NH3(aq) D. NaCl(aq) and KOH(aq) Miracle Learning Centre Answer to Chemistry Tuition Question on Qualitative Analysis. (O Level Chemistry Tuition/ IP Chemistry Tuition) 1)C 2)D 3)C Learn from our Chemistry Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Chemistry tuition, Physics tuition, Maths tuition and Science tuition Classes.

Miracle Learning Centre Chemistry Tuition Question on Particulate Nature of Matter. (O Level Chemistry Tuition/ IP Chemistry Tuition)

1 Zinc nitrate, Zn(NO3)2 produces zinc oxide, oxygen gas and nitrogen dioxide gas when it is decomposed. (a) Write the balanced chemical equation for the reaction. _____________________________________________________________ (b) When nitrogen dioxide is cooled, it forms a yellow liquid and then pale yellow crystals. These crystals are heated and the temperature is measured every minute. The following graph can be drawn.

(i) Describe the arrangement and movement of the molecules in the region C – D. __________________________________________________________ (ii) Name the change that occurs in the region B – C. ________________________________________________________ (d) Nitrogen dioxide, oxygen and water react to form dilute nitric acid. Briefly describe how zinc nitrate crystals could be prepared from dilute nitric acid and zinc oxide. _______________________________________________________________ _______________________________________________________________ Miracle Learning Centre Answer to Chemistry Tuition Question on Particulate Nature of Matter. (O Level Chemistry Tuition/ IP Chemistry Tuition) 1a)2Zn(NO3)2  2ZnO + O2 + 4NO2 1b)The molecules are packed closely together and but are disorderly. The molecules are able to move throughout the liquid. 1c)Melting. 1d)1. Add zinc oxide to the hot acid and stir. 2. Remove the excess zinc oxide by filtering. 3. Heat the solution of zinc nitrate in an evaporating dish to produce a saturated solution and cool. 4. Filter the crystals and dry them by squeezing them between filter paper. Learn from our Chemistry Tuition Questions and Answers. Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908. (Specialist in Science and Maths) for Primary, Secondary and JC levels. Miracle Learning Centre specialises in Chemistry tuition, Physics tuition, Maths tuition and Science tuition Classes.

Singapore Gets Top Position in Biggest Global Education Rankings

Singapore is well known on the planet for its effective training framework, which concentrates on giving quality instruction and creating learning capacity in kids. What made Singapore's training not the same as others is its instructional administration. In the nation, the guidelines followed in classroom teachings are profoundly scripted and uniform at all levels of training and additionally in all subjects. The learning gave in the classrooms is sensible, predictable, proper and reasonable, in view of different pedagogical conventions that incorporate both Eastern and Western customs. Indeed, instruction in Singapore primarily concentrates on conveying accurate and viable information, consummation of the educational modules, and get ready understudies for semester-end exams and national stakes exams.

In the previous 50 years or somewhere in the vicinity, Singapore has gained colossal ground in the field of training to raise its level of education. Additionally, the country has underscored more on down to earth and centered learning; and at present depends on instructing through worksheets, reading material, worked illustrations and bunches of practice, practice and preparing. Educational cost is likewise a huge part of Singapore's showing framework, making the country a standout amongst the most costly nations. There are different educational cost focuses in Singapore that offer educational cost in Math, Science and English with the mean to improve the learning capacities of the understudies. Today, the instruction arrangement of the nation pulls in understudies from diverse parts of the world for one single reason i.e. better learning and vocation.

Miracle Learning Centre Pte Ltd is the best centre in Singapore offering Chemistry Tuition. All the students who come to MIRACLE for Chemistry have given us outstanding testimonials as they have improved drastically not just in their grades but also in their understanding of Chemistry. They also begin to LOVE Chemistry which used to be their most hated subject.

Mixtures

Science tuition classes in Miracle Learning Centre is very useful. If you do not understand Science, you must definitely attend the Science tuition class at Miracle Learning Centre. Let us learn about mixtures in this Science tuition lesson.

Your Science Tuition teacher at Miracle Learning Centre will teach you about mixtures. Mixture consists of two or more substances which are not joined together chemically. They are joined together physically. Examples of mixtures are, seawater, air, and orange juice. Seawater is made up of salt and water. Air is made up of carbon dioxide, oxygen, nitrogen, water vapour and noble gases.
The following are the properties of mixture. A mixture possesses the properties of the substances that make up the mixture. A mixture can be separated into its components by physical means such as evaporation, distillation and filtration. The substances in a mixture can be mixed in any proportion by mass. Little or no energy in the form of heat or light is given out and taken in due to the lack of chemical reaction taking place during the formation of a mixture.

The student at Miracle Learning Centre asked, " Is duralumin a mixture or a compound? " The chemistry tuition teacher at Miracle Learning Centre replied, " It is a mixture of aluminium, copper, magnesium and manganese. Duralumin is an alloy. There are other common alloys like steel, bronze and brass. These mixtures have no fixed proportion by mass. No heat and light is involved during the mixing. Other common mixtures include crude oil and fizzy drinks like Pepsi or 7-up."
Miracle Learning Centre hope you have understood the mixture and how it helps you to answer chemistry tuition questions. Do come to Miracle Learning Centre for more chemistry tuition lessons to learn more about mixtures and chemistry.

Separation Techniques - Distillation and Fractional Distillation

Chemistry tuition classes in Miracle Learning Centre is very useful. If you do not understand chemistry, you must definitely attend the chemistry tuition class at Miracle Learning Centre. Let us learn about separation techniques - distillation and fractional distillation in this chemistry tuition lesson.

Your chemistry tuition teacher at Miracle Learning Centre will teach you about separation techniques - distillation and fractional distillation. Distillation is used to separate a solvent from a solution. The solution is heated up. It evaporates and condenses into a liquid called the distillate. For example, to obtain pure water from seawater, distillation is used. The distillate collected is pure water and salt remains in the flask. Distillation is used in the perfume industry. Many plants contain fragrant oils which can be used to make perfume. The oil is extracted by heating the plant material and distilling the vapour.

Fractional distillation is to separate a mixture of miscible liquids. The additional component in fractional distillation as compared to distillation, is the fractionating column. Fractional distillation separates liquids due to their different boiling points. For example, crude oil is separated into petroleum gas, petrol, naphtha, kerosene, diesel oils, fuel oil, lubricating oil and bitumen. Other examples include fractional distillation of liquid air to obtain nitrogen, oxygen and argon.
The student at Miracle Learning Centre asked, " How is ethanol and water separated? " The chemistry tuition teacher at Miracle Learning Centre replied, " Ethanol and water is separated by fractional distillation. Ethanol and water are miscible and have different boiling points. Since ethanol has a lower boiling point than water, it will be collected first."

These two separation techniques are for separating mixtures. Miracle Learning Centre hope you have understood the separation techniques - distillation and fractional distillation and how it helps you to answer chemistry tuition questions. Do come to Miracle Learning Centre for more chemistry tuition lessons to learn more about techniques - distillation and fractional distillation, and chemistry.

Can light Travel Through Wires just Like Electricity?

Your science tuition always brings you interesting and thought provoking stories. Here is another interesting question from your physics tuition. It is well known that electricity can travel through metallic wires from one place to another. Do you know that light can also travel through wires? These wires are not metallic ones, but are made of glass. Light carrying wires are extremely thin and are called optical fibres. The branch of science dealing with the conduction of light through fibres is called fibre optics.

John Tyndall, a British physicist in 1870, showed that light can travel along a curved rod of glass or transparent plastic. Light travels through transparent rods by total internal reflection process. The sides of the fire reflect the light and keep it inside as the fibre bends and turns.

These narrow fibres contain a slender core of glass having a higher refractive index that is surrounded with another thin cladding of glass having a lower refractive index. Light is carried by the core and the covering aids in bending the light back to the core.

The fibres are drawn from thick glass rods in a special furnace. The glass rod of higher refractive index is inserted in a tubing of glass of lower refractive index. Then the two are lowered carefully and slowly through a vertical furnace and the fibre drawn from the lower end is wound on a revolving drum. With this method fibre of about 0.025 mm in diameter can be drawn.

Thus the fibres prepared in this manner, must be aligned in the proper way to form a bundle. They should never cross each other at any stage. In that case the image transported through the fibres will become scrambled. They have to be kept always in straight lines. After this aligned bundle is prepared successfully, it then can be turned or bent in any required direction.

Fibre optic instruments can transmit signals like programs in television and telephonic conversations. In the future, using laser beams and single bundle of optical fibres, scientists will be able to send thousands of telephone conversations simultaneously.

Introduction to Miracle Learning Centre With a Quote

Have you heard of Miracle Learning Centre?

We have been discussing about Primary Science and Primary Maths. Let me give you a short introduction to Miracle Learning Centre.

Miracle Learning Centre Pte Ltd started in 2008 as a centre specializing in Mathematics and Science (Primary, Secondary, JC).

We were founded with one simple aim – “achieving excellence in mathematics and science”, we have been able to stay focused, and deliver consistent results.
We must be doing something right!

The steady yearly increase in our enrolment across all levels tells us so. :)

After your child's Primary school education, they will proceed to secondary school. We have vast experience in Secondary school Maths and Science education. Hence, remember to come back to us.
This is what Jolene Loh from Fairfield Methodist has to tell you:

Thank you Miracle Learning Centre For helping me with my sciences for the past 4 years. And also thank you teachers for the encouragement and support you’ve shown, and for helping and guiding me. It has been an enjoyable time and I’ll never forget my time here.

Be sure not to miss out on any events or science tuition classes at Miracle Learning Centre!
This quote is for you too. Make full use of it.

“There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle.” ― Albert Einstein

Miracle Learning Centre believes that every child is a miracle. With that belief, we work to develop the very best in every child.

Every child has the ability to create more miracles in his/her lifetime than we can ever imagine. We have to encourage them and support them all the way.

Air and its Properties

Chemistry tuition classes in Miracle Learning Centre is very useful. If you do not understand chemistry, you must definitely attend the chemistry tuition class at Miracle Learning Centre. Let us learn about air and its properties in this chemistry tuition lesson.

Your chemistry tuition teacher at Miracle Learning Centre will teach you about air and its properties. Air supports life. Processes such as photosynthesis, combustion and respiration, all require air. Air is a mixture of gases. It is made up of 78% nitrogen, 21% oxygen, 1% noble gases, 0.03% carbon dioxide and water vapour. Since air is a mixture, the composition of air varies from place to place. The amount of water vapour in the air also varies. On a humid day, there is a lot of water vapour in the air, hence, we perspire more easily.

Nitrogen is a colourless, odourless gas, and is the most abundant gas in the air. Nitrogen is less dense than air. Oxygen is also colourless and odourless, similar to nitrogen. However, it has approximately the same density as air.

The student at Miracle Learning Centre asked, "Why is nitrogen the most abundant gas instead of oxygen?" The chemistry tuition teacher at Miracle Learning Centre replied, " Nitrogen is an inert and does not combine easily with other substances as compared to oxygen which is very active as it readily combines chemically with many substances to form other new substances."
Miracle Learning Centre hope you have understood the air and its properties and how it helps you to answer chemistry tuition questions. Do come to Miracle Learning Centre for more chemistry tuition lessons to learn more about air and its properties and chemistry.