Period 3 Flashcards

Period 3

A-Level AQA Chemistry

This flashcard pack provides an overview of chemical reactions involving metal and non-metal oxides with water, their resulting pH levels, and definitions and characteristics of different oxides such as ionic, macromolecular, simple molecular, and amphoteric oxides.

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Describe the reaction of sodium with water.	Sodium reacts with cold water to produce sodium hydroxide and hydrogen gas.
Define ionic oxides.	Ionic oxides are metal oxides that have high melting points and ionic giant lattice structures.
How are macromolecular oxides different from ionic oxides?	Macromolecular oxides, like SiO, have many strong covalent bonds between atoms, while ionic oxides have strong forces of attraction between ions.
What type of oxides are P4O10 and SO2?	P4O10 and SO2 are simple molecular oxides with weak intermolecular forces between molecules.
What is the pH of Mg(OH)2 when it reacts with water?	MgO (s) + H2O (I) -> Mg(OH)2 (s) pH 9
What type of oxides do not dissolve in water?	Al2O3 and SiO2
Define amphoteric oxides.	Oxides that can act as both an acid and an alkali
What is the pH of H2SO3 when it reacts with water?	SO2 (g) + H2O (I) -> H2SO3 (aq) pH 3
What is the pH of H2SO4 when it reacts with water?	SO3 (g) + H2O (I) -> H2SO4 (aq) pH 0
Describe the reaction between NaO and HCl.	NaO (s) + 2 HCI (aq) -> 2NaCI (aq) + H2O (I)

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