Acids, Bases and Salts
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10 questions
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- Q1What is an acid?A soluble baseA substance that will neutralise an acidA chemical which changes colour when added to acids and alkalisA substance that produces H<sup>+</sup> ions when added to water30s
- Q2What is an alkali?A substance that will neutralise an acidA soluble baseA chemical which changes colour when added to acids and alkalisA substance that produces H<sup>+</sup> ions when added to water30s
- Q3A substance with a pH of 6 is...neutrala strong acida weak alkalia weak acid30s
- Q4Pick the correct equation for the reaction between hydrochloric acid and iron oxide.Sulphuric acid + iron (III) oxide → iron (III) chloride solution + waterHydrochloric acid + iron (III) oxide → iron (II) chloride solution + waterHydrochloric acid + solid iron (III) oxide → iron (III) chloride solution + waterHydrochloric acid + iron (III) oxide → iron (III) chlorate solution + water30s
- Q5We can react an acid and an alkali together to produce a salt. The correct name for this type of chemical reaction is...thermal decompositionneutralisationoxidationcombustion30s
- Q6When an acid and an alkali react, a salt and water are formed. Pick the correct salt produced when ammonium hydroxide reacts with nitric acid.Ammonium phosphateAmmonium nitrateAmmonium chlorideAmmonium sulphate30s
- Q7Salts can also be made by reacting metals with acids. What gas is given off when a metal reacts with an acid?HydrogenNitrogenCarbon dioxideOxygen30s
- Q8Precipitation reactions occur when an insoluble salt is formed. Precipitation reactions can be used in industry to...split large molecules into smaller onesremove metals from their oresremove unwanted impurities from metalsremove some substances from waste water30s
- Q9A strong acid...turns universal indicator paper greenhas a high pH numberis partially ionised in wateris 100% ionised in water30s
- Q10Pick the correct combination of definitions.Acid - proton giver<BR> Alkali - proton donorAcid - proton donor<BR> Alkali - proton acceptorAcid - proton acceptor<BR> Alkali - proton acceptorAcid - proton acceptor<BR> Alkali - proton donor30s