Sunday, February 4, 2007
Acid, Alkali, Neutral
Our theme is Acid, Alkali or Neutral?
SOAP / BUBBLES (alkaline)Soap is a surfactant used together with water for cleaning and washing. Hence, in this case, your facial cleanser is also a type of soap. Soap is actually manufactured by reacting animal fats with alkali! However, there is an exception. Soap can also be produced by reacting vegetable oil with alkali. This process is called Saponification. Sponification also refers to the process in which fats and tissues in a corpse convert into 'grave wax'. However, it will only take place in the presence of alkali.
H2O (neutral)In general, water is neither acidic nor alkaline! However, in different parts of the world, the groundwater can be slightly acidic or alkaline, depending on the location. Most importantly, after water is being treated, it is safe for consumption. No one can survive without water! Therefore, save the water, save the Earth!
Calamine Lotion (alkaline)A bee stung you? Use Calamine Lotion! The Methanol in this lotion will help neutralize the acidity. Also, it provides a cooling effect so as your hand would not burn after the sting. This is just one of its many uses. It can be used to treat rashes, blisters and even sunburn!
TOOTHPASTE (alkaline)Ever wondered why your mouth becomes clean after brushing? The toothpaste is the answer. It is alkaline. Therefore, it helps to neutralise the acid in your mouth. Besides, it also ensures that your teeth is more resistant to decay and bacteria that may cause cavities.
BATTERIES (alkaline)Batteries are of alkali-based! Today, most household uses alkaline batteries. However, everyone should be careful when handling them as they are prone to leaking potassium hydroxide(alkali!), a caustic agent that may cause respiratory, eye and skin irritation!
ORANGE (acidic)Acid can be found in food too! Orange is a highly acidic food due to its high citrus acid content, however, after being metabolized it will cause urine to become alkaline. Therefore, do bear in mind that orange is good for health! (: You wouldn't want your urine to be acidic!
Critic Acid as an ingredient in lemon tea (acidic)5% Citric Acid is present in lemon, giving it a pH between 2 to 3. Hence, this gives lemon an infinite number of uses as it is a cheap source of acid. Lemon juice is sprinkled on fish before it is cooked to neutralize the taste of amines found on fishes. If you drink lemon juice, be sure to rinse your mouth to prevent tooth decay!Done by:
Qiao Wei
Dionis
Charis
Syahid
Mun Ling
innova0723b wrote on 11:27 PM.
