The entire quiz question bank! This quiz pulls questions at random from the entire 1100+ question-bank Loading... 1. In a flame test, a orange-red colour is seen. Give the formula of the cation which is present.Na⁺Li⁺K⁺Ca²⁺Question 1 of 10 Loading... 2. When preparing hydrated copper(II) sulfate crystals starting from copper(II) oxide, why is the acid gently heated?To speed up the reactionTo increase the concentration of the acidTo boil the acidTo ensure all the acid has reacted so there is no acid leftQuestion 2 of 10 Loading... 3. Explain, in terms of structure and bonding, why sodium chloride has a very high melting pointNaCl has a giant ionic structure with weak electrostatic forces between oppositely charged ions that require little energy to breakNaCl has a giant ionic structure with strong electrostatic forces between oppositely charged ions that require a lot of energy to breakNaCl has a simple molecular structure with weak intermolecular forces that require little energy to breakNaCl has a simple molecular structure with strong electrostatic forces between oppositely charged ions that require a lot of energy to breakQuestion 3 of 10 Loading... 4. What are positive ions called?protonsanionscations (ca+ions)electronsQuestion 4 of 10 Loading... 5. Are cations positively or negatively charged?negativelypositively (ca+ions)eitherneutralQuestion 5 of 10 Loading... 6. How many neutrons in a typical atom of fluorine?9109.519Question 6 of 10 Loading... 7. What is the universal indicator colour of a pH 11-14 solution?GreenRedYellowPurpleQuestion 7 of 10 Loading... 8. State the electron configuration of the sulfide ion2,8,8,22,8,22,8,88,8,2Question 8 of 10 Loading... 9. What happens when something evaporates?Evaporation is the change of state when a substance heats up from solid to liquidEvaporation is the change of state when a substance cools from gas to liquidEvaporation is the change of state when a substance cools from liquid to solidEvaporation is the change of state when a substance heats up from liquid to gasQuestion 9 of 10 Loading... 10. What is needed to complete this diagram to show the ionic bonding in magnesium chloride, MgCl₂ ?1) eight electrons around the chloride (seven dots and one cross) 2) A charge of +2 on the magnesium and -1 on the chloride 3) A second chloride ion the same as the first1) eight electrons around the chloride (seven dots and one cross) 2) A charge of +2 on the magnesium and -1 on the chloride 3) A second magensium ion the same as the first1) eight electrons around the chloride (seven dots and one cross) 2) A charge of +1 on the magnesium and -2 on the chloride 3) A second chloride ion the same as the first1) eight electrons around the magnesium (any combination of dots and one crosses) 2) A charge of +2 on the magnesium and -1 on the chloride 3) A second chloride ion the same as the firstQuestion 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
