alkalinity

IPA/ˌælkəˈlɪnəti/
KK[ˌælkəlˈɪnəti]IPA/ˌælkəˈlɪnəti/

alkalinity — noun

1. how much alkali a substance contains, shown by its pH level being greater than 7

1.名詞C1
釋義

how much alkali a substance contains, shown by its pH level being greater than 7

例句

Before planting tomatoes, Mert tested the alkalinity of the garden soil.

test/measure the alkalinity of [substance]

High alkalinity in the lake near Elena's house killed most of the fish.

collocation: high alkalinity

同義詞
  • basicity

    more technical chemistry term for the opposite of acidity; less common in everyday contexts like gardening or pool care

  • alkali level

    more descriptive phrase; less precise but used in practical instructions (e.g., pool maintenance guides)

反義詞
  • acidity

    the opposite quality, measured by a pH level below 7

文法句型

alkalinity of [substance]

the alkalinity of [something]

用法筆記

Common in science and technical contexts such as water treatment, soil analysis, and chemistry. Usually uncountable, but can be countable when referring to different types or degrees of alkalinity.

常見錯誤

This soap has a high alkalinity.' (when describing the soap itself)
This soap is highly alkaline.
💡'alkalinity' is a noun for a measurable quality; use the adjective 'alkaline' when describing what something is like.