The pH of Soil (Leaving Cert Agricultural Science): Flashcards
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Neutral pH value
Neutral pH value
7
pH scale measures
pH scale measures
Acidity/alkalinity of soil (0-14 scale)
Universal indicator function
Universal indicator function
Changes colour based on pH levels
Filtrate definition
Filtrate definition
Liquid passing through filter paper
Why use deionised water for pH test
Why use deionised water for pH test
Avoids affecting natural pH of soil sample
Green colour in pH test means
Green colour in pH test means
Neutral soil (pH 7)
Yellow colour in pH test means
Yellow colour in pH test means
Moderately acidic soil (pH 5-6)
Red/orange colour in pH test means
Red/orange colour in pH test means
Very acidic soil (pH 1-4)
Blue/purple colour in pH test means
Blue/purple colour in pH test means
Alkaline soil (pH 8-14)
Why filtration essential in pH test
Why filtration essential in pH test
Removes solid particles interfering with colour observation