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Acid and Alkali
Science
Question
Acid and Alkali
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The paper strip is used to identify the property of a substance whether it is acidic or alkaline
Litmus paper
Colour of the blue litmus paper if dipped in acidic solution
Change to red
Colour of the blue litmus paper if dipped in alkaline solution
No change
Colour of red litmus paper if dipped in acidic solution
No change
Colour of red litmus paper if dipped in alkaline solution
Change to blue
Colour of blue and red litmus paper if dipped in neutral solution
No change
The characteristic of an acidic substance
Change blue litmus paper to red and have a sour taste
The characteristic of an alkaline substance
Change red litmus paper to blue and have a bitter taste
The characteristic of neutral substances
Will not change the colour of litmus paper and have a sweet, tasteless or salty taste
Natural substances that substitute litmus paper
Turmeric juice, purple cabbage juice and hibiscus extract
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Acid and Alkali
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