The entire quiz question bank! This quiz pulls questions at random from the entire 1100+ question-bank Loading... 1. In the dot and cross diagram of the outer electrons showing the covalent bonding in a molecule of hydrogen (H₂), how many electrons should be shown in areas 1, 2 and 3?There should be zero electrons in areas 1 and 3, and two electrons in area 2There should be seven electrons in areas 1 and 3, and four electrons in area 2There should be six electrons in areas 1 and 3, and two electrons in area 2There should be seven electrons in areas 1 and 3, and two electrons in area 2Question 1 of 10 Loading... 2. State the solubility rule for sulfate saltsall sulfates are solubleall sulfates are insolubleall sulfates are insoluble, except those of sodium, potassium and ammoniumall sulfates are soluble, except those of lead, barium and calciumQuestion 2 of 10 Loading... 3. A sample of bromine contained the two isotopes in the following proportions: bromine-79 = 50.7% and bromine-81 = 49.3%. Calculate the relative atomic mass of bromine(81x79)/100 = 63.99((79x50.7)+(81x49.3))/100 = 79.99(81 + 79)/2 = 80((81x50.7)+(79x49.3))/100 = 80.01Question 3 of 10 Loading... 4. Is iron (II) hydroxide soluble?noslightlyyesQuestion 4 of 10 Loading... 5. 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 gains electrons. C is oxidised because it gains oxygenAl³⁺ is reduced because it loses electrons. C is oxidised because it gains electronsAl³⁺ is reduced because it loses oxygen. C is oxidised because it gains oxygenAl³⁺ is reduced because it loses electrons. C is oxidised because it gains oxygenQuestion 5 of 10 Loading... 6. Explain the effects of increasing the concentration of solutions on the rate of a reaction in terms of particle collision theory1) more particles in same space 2) less frequent collisions 3) increase rate of reaction1) more particles in same space 2) more frequent collisions 3) decrease rate of reaction1) more particles in same space 2) more frequent collisions 3) increase rate of reaction1) more particles in same space 2) less frequent collisions 3) decrease rate of reactionQuestion 6 of 10 Loading... 7. Give the formula of sulfuric acidH₂SO₄HSHSO₄H₂SQuestion 7 of 10 Loading... 8. What is meant by the term molecule?A molecule is found in the nucleus of an atomA molecule is the smallest part of an elementA molecule contains at least three atomsA molecule is made of a fixed number of two or more atoms covalently bonded togetherQuestion 8 of 10 Loading... 9. What is a substitution reaction?A reaction where an atoms of a group of atoms is removed from a moleculeA reaction where an atom or group of atoms is replaced by a different atom or group of atomsA reaction where a double bond breaks to form a long chain of moleculesA reaction where an atom or group of atoms is added to a moleculeQuestion 9 of 10 Loading... 10. With universal indicator, what is the pH of a purple solution?4-78-100-311-14Question 10 of 10 Loading... Related Posts:The entire quiz question bank (Double only)!Key Calculations quizEquilibria (triple) quizCondensation Polymers quizElectrolysis quizAlcohols & Carboxylic Acids quiz Hydr0Gen2022-03-09T21:22:06+00:00Categories: Uncategorized|Tags: Quiz| Share This Story, Choose Your Platform! FacebookXRedditLinkedInTumblrPinterestVkEmail
