Page 15 - E-Science Prep1 2024-2025 t2 Unit1_Neat - Copy

Metallic / non-metallic element burns in presence of oxygen

producing oxides

P.O.C Metal oxides Non-metal oxides

Basic oxides Acidic oxides

Definition Oxides produced from Oxides produced from
Applications burning of metals in burning of non-metals in

oxygen oxygen
Basic oxides: Acidic oxides:
Some metal oxides dissolve Non-metal oxides dissolve
in water forming alkali in water forming acids

Mg burns in oxygen forming S burns in oxygen forming
Magnesium oxide Sulphur trioxide

Dissolves in water forming Dissolves in water forming
Magnesium hydroxide Sulphuric acid

Turns red litmus strip to blue Turns blue litmus strip to red

All alkalis are bases but not all Metal oxides v Metal oxides X
bases are alkalis. react + acids
don’t react + alkalis
Basic / metal oxides that dissolve Non-metal oxides
v react + alkalis Non-metal oxides
in water are alkalis.
X don’t react + acids

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Second Term