base

  

Definitions (2)

1.Chemistry: Metal oxide or other compound that reacts with an acid to neutralize it and produces water and a salt. Bases increase the concentration of hydroxide (OH-) ions in an aqueous solution.
2.Mathematics: (1) Number of single-digit symbols in a positional number system. (2) Number that when raised to a particular power has a logarithm equal to the power.

Use base in a sentence

  • Jan was confused when the teacher asked her what the base of ten squared was, but then her best friend whispered that the answer was ten and Jan was able to give the correct answer.

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  • A base in chemistry will usually have a pH level above 7 while an acid would typically have a pH level below 7.

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  • He spilled an acid on the lab bench and was searching for the base, but he couldn't find it among all of his clutter.

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