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pH indicators / acid and alkali
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What farmers need to add in a soil to neutralize the acidity of soil
alkali lime
A substance with a pH greater than 7 is classified as a what?
Alkali
If the right amount of acid is added to the right amount of alkali, what happens?
Neutralisation
A substance that is corrosive and has a pH lower than 7 is classified as a what?
Acids
Vinegar, fizzy drinks and tea are all…
Acids
This is the symbol for which hazard? means can destroy metals and stones
Corrosive