GCSE EdExcel Chemistry Topic 3 Part I - Acids and Alkalis

Question	Answer
Fill in the blank: A ____________ acid contains a large mass of acid in a given ________ of solution	concentrated volume
Fill in the blank: A ____________ acid contains a small mass of acid in a given ________ of solution	dilute volume
pH has a difference of ×____ for each level (eg 2 is ×____ more concentrated than 1)	×10
What is a strong acid?	An acid that completely dissociates (splits up) into ions when dissolved in water
What is a weak acid?	An acid that only partially dissociates (splits up) into ions when dissolved in water
What is a base?	A chemical above pH 7 that reacts to form a salt and water
What is an alkali?	A dissolved base
What are the standard equations for neutralisation?	acid + metal oxide --> salt + water acid + metal hydroxide --> salt + water acid + metal --> salt + hydrogen acid + metal carbonate --> salt + water + carbon dioxide
What is a precipitate?	An insoluble salt usually formed in a precipitation reaction
Oh no... Solubility Rules?	Soluble: All common Sodium, Potassium and Ammonium salts All nitrates Most Chlorides Most Sulfates Sodium, Potassium, Ammonium Carbonate Sodium, Potassium, Ammonium Hydroxide Insoluble: Silver Chloride Lead, Barium, Calcium Sulfate Most Carbonates Most Hydroxides
What is a redox reaction?	A reduction and oxidation reaction, it has lost and gained electrons

Resource summary

	Created by Malachy Moran-Tun over 5 years ago