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Transcript of อย่ามาดู อีดอกกก
Acids can be found around at home such as fruits, and foods in the kitchen.
Type of Acid
1. Tartaric acid (Grapes)
2. Malic acid (Apples)
3. Citric acid (Lemons, Oranges)
4. Salicylic acid (Tomatoes)
5. Carbonic acid (Soft drinks)
6. Acetic acid (Vinegar)
7. Lactin acid (Yoghurt)
Alkalis can be found around at home too such as appliances in the bathroom.
Acid is a chemical substance whose aqueous solutions are characterized by a sour taste, the ability to turn blue litmus red, and the ability to react with bases (Alkali) and certain metals (like calcium) to form salts. Aqueous solutions of acids have a pH of less than 7. A lower pH means a higher acidity, and thus a higher concentration of hydrogen ions in the solution. Chemicals or substances having the property of an acid are said to be '''acidic'''.
What is Acid?
Alkali is a basic, ionic salt of an alkali metal or alkaline earth metal chemical element. Some authors also define an alkali as a base that dissolves in water. A solution of a soluble base has a pH greater than 7. The adjective '''alkaline''' is commonly used in English as a synonym for base, especially for soluble bases. This broad use of the term is likely to have come about because alkalis were the first bases known to obey the Arrhenius definition of a base, and they are still among the most common bases.
What is Alkali?
Piyawat Krapun (Palm) No.6
Amphon Wiengnon (Numpu) No.12
Nutnicha Pholjaroen (Full) No.15
Phuphinee Niyomchon (Ploy) No. 26
There are acids and alkalis at home, that we possibly even use every day!!! Acids and
alkalis affect your health and everyday life in many different way from toothpaste to
drain cleaner, lemon juice to car battery acids.
Property of Alkalis
Alkalis have a bitter taste & have a soapy touch, turn red litmus paper blue, have a pH value > 7, to be caustic and conduct electricity due to the presence of mobile ions in solution.
Property of Acids
Acids have sour taste, they turn blue litmus to red, they are electrolytes, they turn methyl orange to red, strong acids can destroy fabric and cause burn on skin.
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