Last updated on Oct 23, 2026

Testing Period 3 Oxides (AQA A-Level Chemistry): Flashcards

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Testing Period 3 Oxides

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Bonding type in metallic Period 3 oxides ( $Na$ , $Mg$ , $Al$ )

Ionic

Bonding type in non-metallic Period 3 oxides ( $Si$ , $P$ , $S$ )

Covalent molecular

Flame colour when $Na$ burns

Bright yellow

Flame colour when $Mg$ burns

Bright white

pH of $Na_2O$ in water

Strongly basic (13-14)

Nature of $Al_2O_3$

Amphoteric

pH of $P_4O_{10}$ in water

Strongly acidic (1-2)

Flame colour when $S$ burns

Blue

Behaviour of white $P$ in air

Spontaneously ignites

pH nature of non-metallic Period 3 oxides

Acidic

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