Chemical Rreactions 0.0 / 5 ? ChemistryChemical ReactionsGCSEAQA Created by: JayStackzzCreated on: 16-10-19 22:44 What is formed when a metal reacts with oxygen A metal oxide 1 of 24 What does OILRIG stand for Oxidation is loss Reduction is gain 2 of 24 How does the extraction of metals work More reactive metals replace the less reactive metal 3 of 24 Explain oxidation in terms of electrons Electrons are being given to oxygen 4 of 24 What do acids produce when they are ionised Hydrogen 5 of 24 What do acids produce in aq solutions Hydroxide 6 of 24 What is the difference between a base and an alkaline Bases produce a salt and water. Alkaline are also soluble in water 7 of 24 What is produced in a neutralisation reaction Water + Metal Salt 8 of 24 How is pH measured Universal indicator or a pH probe 9 of 24 What does green show (UI) Neutral 10 of 24 What does red show (UI) acid 11 of 24 What does purple show (UI) alkaline 12 of 24 What is the general equation for acids reacting with metals Acid + Metal --> Metal Salt + Hydrogen 13 of 24 What is the general equation of acids and Metal Carbonates Acid + Metal --> Salt + Water + Carbon dioxide 14 of 24 What is a strong acid When the acid fully ionises 15 of 24 What are 3 weak acids carbonic acids ethanoic acids citric acids 16 of 24 As the pH scale decreases by 1 unit, how much does the concentration increase by 10x 17 of 24 How do you get from cm^3 to dm^3 /1000 18 of 24 What is the equation that links the number of moles, concentration, and volume Number of moles = concentration X volume 19 of 24 What is electrolysis passing an electric current through a liquid or solution containing ions to separate the ions 20 of 24 What is the negative electrode called Cathode 21 of 24 What is the positive electrode called anode 22 of 24 How do we separate solids Melt them first 23 of 24 Why is electrolysis expensive Lot of energy to melt solids and lots of energy to produce current 24 of 24
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