The entire quiz question bank (Double only)! This quiz pulls questions at random from the entire Double-only question-bank Loading... 1. Explain what is meant by electric currentThe rate of flow of ions onlyThe rate of flow of electrons onlyThe rate of flow of elephantsThe rate of flow of charged particles (e.g. of electrons or ions)Question 1 of 10 Loading... 2. Describe the structure of metalsA simple regular structure of positive metal ions surrounded by a sea of delocalised electronsA simple random structure of positive metal ions surrounded by a sea of delocalised electronsA giant random structure of positive metal ions surrounded by a sea of delocalised electronsA giant regular structure of positive metal ions surrounded by a sea of delocalised electronsQuestion 2 of 10 Loading... 3. Nitric acid and silver nitrate are added to a solution containing iodide ions. Describe the result.Yellow precipitateCream precipitateBlue precipitateWhite precipitateQuestion 3 of 10 Loading... 4. In paper chromatography if several dyes rise up the paper, why might another dyes not rise?The other dye is the most soluble in the solventThe other dye hasn\'t had enough time to travel up the paperThe other dye cannot move on certain types of paperThe other dye is insoluble in the solvent being usedQuestion 4 of 10 Loading... 5. Is potassium nitrate soluble?yesnoslightlyQuestion 5 of 10 Loading... 6. If an atom loses electrons what happens to its charge?becomes more positivebecomes more negativeswitches its signremains the sameQuestion 6 of 10 Loading... 7. Explain how crude oil is separated into fractionsCrude oil is separated by fractional distillation. Crude oil is heated and the oil evaporates. It then goes into the tower. As the vapours rise up the tower the temperature falls. Different sized fractions condense at different heights because they have different boiling points. Smaller molecules condense high up in the tower. Larger molecules condense low down in the tower. Then the fractions are collected.Crude oil is separated by fractional distillation. Crude oil is heated and the oil evaporates. It then goes into the tower. As the vapours rise up the tower the temperature falls. Different sized fractions condense at different heights because they have different boiling points. Larger molecules condense high up in the tower. Smaller molecules condense low down in the tower. Then the fractions are collected.Crude oil is separated by fractional distillation. Crude oil is heated and the oil evaporates. It then goes into the tower. As the vapours rise up the tower the temperature rises. Different sized fractions condense at different heights because they have different boiling points. Larger molecules condense high up in the tower. Smaller molecules condense low down in the tower. Then the fractions are collected.Crude oil is separated by fractional distillation. Crude oil is heated and the oil evaporates. It then goes into the tower. As the vapours rise up the tower the temperature rises. Different sized fractions condense at different heights because they have different boiling points. Smaller molecules condense high up in the tower. Larger molecules condense low down in the tower. Then the fractions are collected.Question 7 of 10 Loading... 8. When NaOH is added to a sample, the resultant gas turns damp red litmus paper blue. What cation was present in the sample?Potassium (I), K⁺Copper (II), Cu²⁺Calcium (II), Ca²⁺Ammonium, NH₄⁺Question 8 of 10 Loading... 9. What is the formula for calcium bromide?CaBr₂Ca(BrO₂)₂Ca₂BrCaBrO₂Question 9 of 10 Loading... 10. Put these 3 alkali metals in order of reactivity, starting with the most reactive: potassium, francium, lithiumfrancium, potassium, lithiumfrancium, lithium, potassiumlithium, potassium, franciumpotassium, lithium, franciumQuestion 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! FacebookTwitterRedditLinkedInTumblrPinterestVkEmail
