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TAN ZI NING, 1001025346
CHONG HUE LI, 1001025115
NUR SYAHIRAH RAZALI, 1001025850
SEE TECK JIA, 1001025171

Sunday 17 July 2011

Bubble Pop!

Who haven't heard of the word "soft drinks" or perhaps "carbonated drinks" and "soda"? Everyone knows it right.............right?  Sprite, 7up, Pepsi, Root Beer are the examples of carbonated drinks!


Not to forget, the famous legendary carbonated drink, Coca Cola!
**Just by looking at the pictures, I feel like going to a supermarket and grab them all :3
Carbonated drinks, as we are aware, are a mixture of carbonated water and other ingredients like flavours and additives. Carbonated drinks are made by dissolving carbon dioxide gas, CO2 and other ingredients; flavours, sweeteners, food acids etc. The process of dissolving carbon dioxide into water is called carbonation. When you dissolve carbon dioxide into water, it is called as carbonated water or sparkling water. It is a chemical formulation that gives out carbonic acid.


Carbonic acid has a chemical formula of H2CO3. Carbonated water is often the based of most soft drinks that are manufactured. There may be additives (such as sodium citrate, potassium sulphate and others) that may be used to give it a specific taste, flavour etc.. Sometimes, carbonated water is also useful in removing stains from coffee mugs or stains from silver.


How is soda pop carbonated?


The chemical formula as a result of carbonation gives the soft drinks it's bite. The fizzy taste is due to carbonic acid and not due to the bubbles. Carbonation is also used sometimes to lower the pH of a water solution. When the ingredients are combined and mixed in the container, the carbon dioxide gas filled the empty space at the top of the container. The bottle or can is then sealed. The carbon dioxide at the top of the container is under pressure and prevents any of the dissolved carbon dioxide from escaping the solution.


When the bottle is opened, a familiar "hiss" sound is heard and the carbon dioxide gas in the top of the bottle is released. The dissolved carbon dioxide can now escape from the solution; the result is the familiar bubbling carbonated drink. But then, the carbon dioxide does not escape on it's own, but forms a molecule called the nucleus so that they have the power to resists fluids, escape to the surface. This molecule can be seen when we poured the drink into a glass, then at the edge will form bubbles that look together. This nucleus also provide delicious sensation on the tongue.


What are the ingredients and composition of a carbonated drink? 


The content of carbon dioxide in soft drinks depends on the type of drink. For beverages containing flavour imitation, usually used in high carbonation levels. In the beverage with fruit flavours that contain high sugar levels of carbon dioxide is preferably low. Let's take a few examples of composition from a coca cola drink. 


  1. Cane sugar - sucrose which has been extracted from a sugar cane that produces naturally high concentrations of this sweet substance. Many people prefer it because they believe it has a superior flavour.
  2. Phosphoric acid - creates an acid medium that enhances the absorption of carbon dioxide (which is also forms carbonic acid in water); reducing the pressure required and allowing the mixture to be bottled with a metal cap.
  3. Sodium benzoate - keep soft drinks fresh and prevent harmful bacteria from growing.
  4. Citric acid - for flavouring and buffering properties; Increase the effectiveness of anti-microbial preservatives.
  5. Ace-K (Acesulfame potassium) - calorie-free artificial sweetener.
But, there are some ingredients that can bring destructive to health such as caffeine where it is an addictive drug that has the ability to stimulate mental alertness, overcome fatigue, and enhance endurance. Over consumption of soft drinks also brings a major cause of tooth decay. Similarly carbonated beverages are not directly associated with high risk of bone fracture.


Now, almost every restaurant especially those fast food branches offers carbonated drinks in their menu list. So far, we've been to many restaurants such as KFC, McDonalds, and Old Town White Coffee and we had Coca Cola, Sprite, and all those frizzy drinks! Check us out having fun drinking carbonated drinks below hehehe


 
Zi Ning probably was drinking Pepsi that time :) 
[Her expression? Maybe because she was fizzed (is that even a word?) by the "bubbles" haha]
Lily and her Coca Cola with ice cream float on top! *drools*
And lastly, me enjoying my McDonald's McValue lunch with my favourite drink, Sprite!


Take care of your health, do not drink too much of carbonated drinks!  


That's all from me; Syira. Till then!

P/s : Well, perhaps once in a while is fine, especially if you are a lover (like me) hehe

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