The cards Question What is a salt? Tap to flip Answer An ionic compound made of positive and negative ions held by electrostatic attraction. Question What does an empirical formula show? Tap to flip Answer The simplest whole-number ratio of atoms of each element in a compound. Question What kind of structure do salts have? Tap to flip Answer Giant 3D ionic structures that form crystals with a regular arrangement of ions. Question Which ions do acids contain? Tap to flip Answer Aqueous hydrogen ions, H⁺(aq). Question Which ions do alkalis contain? Tap to flip Answer Aqueous hydroxide ions, OH⁻(aq). Question What is the ionic equation for neutralisation? Tap to flip Answer H⁺(aq) + OH⁻(aq) → H₂O(l) Question Does neutralisation always produce a solution of pH 7? Tap to flip Answer No; with a weak acid the salt solution may be alkaline, and with a weak base it may be acidic. Question What is the pH of an acid? Tap to flip Answer Less than 7. Question Are hydroxides generally soluble or insoluble bases? Tap to flip Answer Generally soluble (they contain OH⁻ ions). Question Are metal oxides generally soluble or insoluble bases? Tap to flip Answer Generally insoluble. Question What kind of solution do non-metal oxides form? Tap to flip Answer Acidic solutions (they are soluble). Question What are the products when a metal reacts with an acid? Tap to flip Answer A salt and hydrogen. Question What are the products when a metal carbonate reacts with an acid? Tap to flip Answer A salt, water and carbon dioxide. Question What is the test for hydrogen gas? Tap to flip Answer A lighted splint makes a squeaky pop in hydrogen. Question What is the test for carbon dioxide? Tap to flip Answer Bubble it through limewater, which turns cloudy. Question What does the state symbol (aq) mean? Tap to flip Answer In aqueous solution. Question What decides the name of the salt formed in a reaction with an acid? Tap to flip Answer The acid used. Question How is the concentration of a solution in g/dm³ defined? Tap to flip Answer The mass of solute, in grams, dissolved in 1 dm³ of distilled water. Question How many cm³ are in 1 dm³? Tap to flip Answer 1000 cm³. Question How can a solution be diluted? Tap to flip Answer By increasing the volume of distilled water. Question What is a solute? Tap to flip Answer A substance that has dissolved into a solvent. Question What range does the pH scale cover? Tap to flip Answer 0 to 14. Question What colour does phenolphthalein turn in alkaline conditions? Tap to flip Answer Pink (it is colourless otherwise). Question What colour is methyl orange in acidic conditions? Tap to flip Answer Red. Question What colour is methyl orange in basic conditions? Tap to flip Answer Yellow. Question What colour does litmus paper turn in acidic conditions? Tap to flip Answer Red. Question What colour does litmus paper turn in basic conditions? Tap to flip Answer Blue. Question Which gives an exact pH value: an indicator or a pH meter? Tap to flip Answer A pH meter; indicators only show by colour whether a solution is acidic, neutral or alkaline. Question What is a precipitate? Tap to flip Answer An insoluble solid formed when two solutions react together. Question Are all salts either completely soluble or completely insoluble in water? Tap to flip Answer No; some salts have limited solubility and dissolve only to a certain extent. Question What is crystallisation? Tap to flip Answer Forming solid crystals from a saturated solution by evaporating the solvent. Question When making a salt from a metal oxide and an acid, why is the metal oxide added in excess? Tap to flip Answer To make sure all the acid reacts to form salt and water. Question How is the excess metal oxide removed when making a soluble salt? Tap to flip Answer By filtration. Question What are the products when a metal hydroxide reacts with an acid? Tap to flip Answer A salt and water. Question How does pH change around the neutralisation point when a base is added to an acid? Tap to flip Answer It changes quickly. Question What is a titration used to find? Tap to flip Answer The exact volumes of solutions that react with each other. Question What happens to strong acids and alkalis in aqueous solution? Tap to flip Answer They are completely ionised. Question Is universal indicator used to find the end point of a titration? Tap to flip Answer No; a suitable indicator other than universal indicator is used. Question In a titration, what is the titrant? Tap to flip Answer The solution of known concentration added from the burette. Question In a titration, what is the titre? Tap to flip Answer The volume of titrant needed to reach the end point. Question How close are concordant titres typically? Tap to flip Answer Within ±0.10 cm³ of each other. Where this deck sits in the curriculum Curriculum National Curriculum for England Stage GCSE (Years 10–11) Course GCSE Chemistry Unit Making salts Exam boards AQA, Edexcel, OCR Tiers foundation and higher England's National Curriculum sets what is taught; the units and their order are Oak National Academy's. Flash Feed is not affiliated with Oak or any exam board.
How this deck was checked On 2026-11-02, every card was compared with its source: the lessons of Oak National Academy, a public body funded by England's Department for Education that publishes lessons for the national curriculum. Because the cards come from those lessons, no second source was sought. The comparison was done automatically, not by a teacher, so a card can still be wrong. Flash Feed is not affiliated with any source named here.
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A Chemistry lesson by Oak National Academy licensed under Open Government Licence (OGL)
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