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  • Stage 1

    Answer 5 out of 7 questions correctly.

Acids and bases are part of your everyday life. Foods like yogurt and coffee are acidic, while medications like antacids and milk of magnesia are basic. But how can you tell whether a solution is acidic or basic?
One way is by measuring its pH. Typically, pH values range from 0 to 14 on the pH
scale.
Solutions with a pH less than 7 are acidic, and solutions with a pH greater than 7 are basic. Solutions with a pH of exactly 7 are neutral—neither acidic nor basic.
This table shows the pH of some common substances at
25
C
.
SubstancepH
ammonia cleaner11.7
corn syrup5.0
pure water7.0
liquid soap9.5
vinegar2.5
Use the table to identify each substance as acidic, neutral, or basic.
ammonia cleaner
vinegar
liquid soap
pure water
corn syrup
Acidic
Neutral
Basic
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