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GR1- ACID-BASE

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