Key Reactions quiz Loading... 1. What is the universal indicator colour of a strongly alkali solution?BlueRedPurpleGreenQuestion 1 of 14 Loading... 2. hydrochloric acid + sodium hydroxide →hydrochloric acid + sodium hydroxide → sodium chloride + hydrogenhydrochloric acid + sodium hydroxide → sodium hydrochloride + hydrogenhydrochloric acid + sodium hydroxide → sodium chloride + waterhydrochloric acid + sodium hydroxide → sodium hydrochloride + waterQuestion 2 of 14 Loading... 3. What is an acid?An acid is a source of hydrogen ions, H⁺An acid is a compound that reacts with metalsAn acid is a green solutionAn acid is a corrosive substanceQuestion 3 of 14 Loading... 4. State the colour of litmus in acidic and alkaline solutionsacidic = pink alkali = colourless acidic = blue alkali = red acidic = colourless alkali = pinkacidic = red alkali = blueQuestion 4 of 14 Loading... 5. What is an alkali compared to a base?Alkalis are anything with a pH above 7. Bases are only metal oxidesBoth alkalis and bases have pH greater than 7 but only alkalis are corrosiveAlkalis are bases that are soluble in waterAlkalis have higher pHs than basesQuestion 5 of 14 Loading... 6. What colour flames to sulfur, carbon and magnesium produce when they burn in air?Sulfur = orange, Carbon = yellow/orange, Magnesium = whiteSulfur = blue, Carbon = yellow/orange, Magnesium = whiteSulfur = orange, Carbon = yellow/orange, Magnesium = greenSulfur = blue, Carbon = yellow/orange, Magnesium = greenQuestion 6 of 14 Loading... 7. Describe the test for carbon dioxide gasTurns damp red litmus paper blueRelights a glowing splintBubble the gas through limewater and see if it goes cloudyTurns moist litmus paper white (bleaches)Question 7 of 14 Loading... 8. State the formula of the hydrogen ionH⁺H⁻H₃O⁺H₃O⁻Question 8 of 14 Loading... 9. Can a base neutralise an acid?NoSometimesOnly if it is more reactive than hydrogenYesQuestion 9 of 14 Loading... 10. Which are described as basic: metal oxides or non-metal oxides?metal oxidesDepends on conditionsNeitherNon-metal oxidesQuestion 10 of 14 Loading... 11. What is the formula for sodium chloride?Na₂Cl₂Na₂ClNaCl₂NaClQuestion 11 of 14 Loading... 12. What do each of the following state symbols represent: (s), (l), (g), (aq)(s) - solid. (l) - liquid. (g) - gas. (aq) - water(s) - solid. (l) - liquid. (g) - gas. (aq) - aqueous (in solution)(s) - solution. (l) - liquid. (g) - gas. (aq) - water(l) - solid. (g) - liquid. (s) - gas. (aq) - aqueous (in solution)Question 12 of 14 Loading... 13. Write the word and chemical equation for the thermal decompostion of calcium carbonate, CaCO₃calcium carbonate → calcium + carbon monoxide 2CaCO₃ → 2Ca + 3COcalcium carbonate → calcium oxide + carbon dioxide CaCO₃ → CaO + CO₂calcium carbonate → calcium + carbon dioxide 2CaCO₃ → Ca + 2CO₂calcium carbonate → calcium dioxide + carbon monoxide CaCO₃ → CaO₂ + COQuestion 13 of 14 Loading... 14. What is the typical range of the pH scale?1-200-100-141-5Question 14 of 14 Loading... Related Posts:The entire quiz question bank!The entire quiz question bank (Double only)!Key Calculations quizEquilibria (triple) quizCondensation Polymers quizElectrolysis quiz Hydr0Gen2020-02-16T16:28:50+00:00Categories: Uncategorized|Tags: Quiz, Topic: Key Reactions| Share This Story, Choose Your Platform! FacebookXRedditLinkedInTumblrPinterestVkEmail