Page 21 - E-Science Prep1 2024-2025 t2 Unit1_Neat - Copy
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PH meter device Universal indicator strips
It determines the PH of any They provide an approximate measuring
solution directly & accurately of PH values of the solutions by
changing the color of the strip.
As the PH value is displayed
immediately on the device’s Each color represents a definite PH
value.
digital screen.
Most salts are ionic compounds formed through the reactions of
acids + alkalis
They are compounds resulted from the combination between
(alkali cation) + metal ion or + atomic group with (acid anion) –
nonmetal ion except oxygen or – atomic group except hydroxide.
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Second Term
