ph

noun (pH); letters (ph)

«ph» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

Everyday

pH is a number that shows how acidic or alkaline a liquid is, on a scale from 0 to 14. tree →
The letters «ph» together usually make an /f/ sound, as in phone and elephant. tree →

In the lessons

In science, pH 7 is neutral (pure water), below 7 is acid (lemon juice), above 7 is alkali (soap). Litmus paper or universal indicator changes colour to show pH. In phonics, «ph» is one way to spell the /f/ sound, mostly in words from Greek.

Examples

Lemon juice has a low pH because it is acidic. tree →
Pure water has a pH of 7. tree →
The indicator turned purple, so the pH was high. tree →
«Ph» in «photo» sounds like f. tree →
We tested the pH of the pond water. tree →
Soap has a pH above 7. tree →

Note

Write it pH (small p, capital H). A LOWER pH number means MORE acidic. Each step is ten times stronger: pH 3 is ten times more acidic than pH 4.

On Mova

Trees and pragmatics of «ph» in the school dictionary: every meaning and example parsed by Mova, with its dependency tree and frames.
«ph» in the school dictionary on Mova free.

This page in Markdown → https://md.dictionary.elamur.ai/free/en/english/ph/