The entire quiz question bank (Double only)! This quiz pulls questions at random from the entire Double-only question-bank Loading... 1. An alkali is called a proton _________An alkali is a proton sinkAn alkali is a proton donorAn alkali is a proton solventAn alkali is a proton acceptorQuestion 1 of 10 Loading... 2. What is needed to complete this diagram to show the ionic bonding in potassium oxide, K₂O ?1) eight electrons around the oxide (six dots and two cross) 2) A charge of +1 on the potassium and -2 on the oxide 3) A second oxide ion the same as the first1) eight electrons around the oxide (six dots and two cross) 2) A charge of +2 on the potassium and -1 on the oxide 3) A second potassium ion the same as the first1) eight electrons around the potassium (any combination of dots and one crosses) 2) A charge of +2 on the oxide and -1 on the potassium 3) A second potassium ion the same as the first1) eight electrons around the oxide (six dots and two cross) 2) A charge of +1 on the potassium and -2 on the oxide 3) A second potassium ion the same as the firstQuestion 2 of 10 Loading... 3. What is an atomic number?The atomic number is the number of protons, neutrons and electrons in an atomThe atomic number is the number of neutrons in an atomThe atomic number is the number of protons and neutrons in an atomThe atomic number is the number of protons in an atomQuestion 3 of 10 Loading... 4. Why a catalyst does not affect the position of equilibrium in a reversible reaction?If a reversible reaction is in dynamic equilibrium, a catalyst increases the rate of the forward reaction and the rate of the backward reaction by the same amount, so the position of equilibrium is unaffectedA reaction in dynamic equilibrium already has the lowest possible activation energyA catalyst reduces the activation energy, and is not used upA catalyst has no effect on a forward or backward reactions if it is in dynamic equilibriumQuestion 4 of 10 Loading... 5. When a solid dissolves, is this process exothermic or endothermic?Depends on the temperature of the surroundingsDepends on the reagentsExothermicEndothermicQuestion 5 of 10 Loading... 6. The chemical equations for the two reactions that occur during the extraction of aluminium are A: Al³⁺ + 3e¯ → Al and B: C + O₂ → CO₂. State and explain which species in the reactions are oxidised or reducedAl³⁺ is reduced because it loses electrons. C is oxidised because it gains electronsAl³⁺ is reduced because it loses electrons. C is oxidised because it gains oxygenAl³⁺ is reduced because it loses oxygen. C is oxidised because it gains oxygenAl³⁺ is reduced because it gains electrons. C is oxidised because it gains oxygenQuestion 6 of 10 Loading... 7. Describe the test for carbon dioxide gasBubble the gas through limewater and see if it goes cloudyRelights a glowing splintTurns damp red litmus paper blueTurns moist litmus paper white (bleaches)Question 7 of 10 Loading... 8. What are negative ions called?protonscationsnegationsanionsQuestion 8 of 10 Loading... 9. What is the name for this piece of lab equipment?dishevaporating basincruciblebeakerQuestion 9 of 10 Loading... 10. Describe the test for carbon dioxide gasRelights a glowing splintTurns damp red litmus paper blueTurns moist litmus paper white (bleaches)Bubble the gas through limewater and see if it goes cloudyQuestion 10 of 10 Loading... Related Posts:The entire quiz question bank!Key Calculations quizEquilibria (triple) quizCondensation Polymers quizElectrolysis quizAlcohols & Carboxylic Acids quiz Hydr0Gen2022-03-09T21:20:41+00:00Categories: Uncategorized|Tags: Quiz| Share This Story, Choose Your Platform! FacebookXRedditLinkedInTumblrPinterestVkEmail
