Acids, Bases & pH review

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What is the pH scale?

Back

The pH scale measures how acidic or basic a solution is, ranging from 0 (most acidic) to 14 (most basic), with 7 being neutral.

Front

What is an acid?

Back

An acid is a substance that donates protons (H+) in a solution and has a pH less than 7.

Front

What is a base?

Back

A base is a substance that accepts protons (H+) or donates hydroxide ions (OH-) in a solution and has a pH greater than 7.

Front

What is neutral pH?

Back

A neutral pH is 7, indicating a balance between acids and bases.

Front

What happens to litmus paper in acidic solutions?

Back

In acidic solutions, blue litmus paper turns red.

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What happens to litmus paper in basic solutions?

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In basic solutions, red litmus paper turns blue.

Front

What is the pH of lemon juice?

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Lemon juice typically has a pH of around 2, making it acidic.

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What is the pH of soap?

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Soap usually has a pH between 9 and 10, making it basic.

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What is the significance of pH in everyday life?

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pH affects various aspects of daily life, including food taste, soil health for plants, and the effectiveness of cleaning products.

Front

What is a common example of an acidic substance?

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Common examples of acidic substances include vinegar and citrus fruits.