Traditional spellings, or occasionally grammatical correctness. In some cases, either spelling is acceptable (i.e. sulfur or sulphur).
Just the spelling - the "ph" is the older way, which the British used as it was the correct way to spell it, now everyone has it spell it with an "f". It's the same element either way.
Pure water is said to be neutral, with a pH close to 7.0 at 25 °C (77 °F). Solutions with a pH less than 7 are said to be acidic and solutions with a pH greater than 7 are basic or alkaline. Acid ground water is water in the rocks that has a pH of 2 to 6.
It is basic or alkaline. On the pH scale of 0 (zero) to 14 with 7 being neutral, pure water has a pH of 7.0 at 25 °C (77 °F). Less than 7 is acidic and more than 7 is basic, since pH is the inverse logarithm of the hydrogen ion (H+) concentration in the solution. It can be expressed as where 'a' is the activity of the H+ ions, hence temperature does have an influence on measured pH.
PH 75 is the most acid.
pH 9 - pH 4 = pH 5 It is stronger by 5 pH.
phraseamphitheatregraphamphoraphotodolphin
You Can spell it like this:KristopherKristoferChristoferCristopherCristoferChrystopherChrystoferJust fiddle around with different combinations of K, C, PH and F
'Sound like F' Ph WordsSome words that are spelled with a pH that sounds like an f are: pharmacyphenolphialphlebotomyphonephrasephysical
Just the spelling - the "ph" is the older way, which the British used as it was the correct way to spell it, now everyone has it spell it with an "f". It's the same element either way.
no it has to be PH instead of F
Because the word comes from the Greek word delphis, and like many Greek words, the "ph" is commonly used for the "f" sound.
By a pH-electrometer (instrumental, accurate, expensive) or by 'pH indicator'-paperstrips
it is easy to spell words this is how to spell D-I-F-F-E-R-E-N-T that was easy
Those letters can be used to spell "giraffe".
f
Geographie (f)orErdkunde (f)
f i f t h