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A solution with a pH less than what value is called an acid ?
<7
....... is an indicator paper that changes color to show whether a substance is acidic or alkaline.
Litmus paper
............,is the process of adding a proton to a species.
Protonation
.....: is pure water contains no impurities and minerals .
Distilled water
Why should we check the pH of swimming pools?
To keep skin and eyes safe
According to Arrhenius, a base is a substance that
Produces OH⁻ in solution
According to Arrhenius, an acid is a substance that:
Produces H⁺ in solution
Why do farmers test soil pH?
To check soil acidity
The word “alkaline” is the same as:
Basic
What does “corrosive” mean?
Able to eat away materials
Lemon juice tastes sour because it contains:
Citric acid
A solution with a pH of 7
neutral
A substance is acidic or alkaline used to determine if a solution
indicator
This solution turns pink after adding phenolphthalein. Is it an acid or a base?
Base
The blue litmus paper turns red. What does this show?
Acidic solution
Soap feels slippery. Is it acidic, neutral, or basic?
Basic (alkaline)
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