Key Reactions quiz Loading... 1. Describe the test for carbon dioxide gasTurns moist litmus paper white (bleaches)Turns damp red litmus paper blueRelights a glowing splintBubble the gas through limewater and see if it goes cloudyQuestion 1 of 14 Loading... 2. What is a base?A compound that reacts with an acid to form hydrogenAn unreactive form of an alkali that is used to store itA source of hydroxide ions, OH⁻A substance which can neutralise an acid, forming salt and water onlyQuestion 2 of 14 Loading... 3. Is iron (III) hydroxide acidic or basic?Acidic (as metal hydroxides are acidic)Depends on the conditionsNeutral (as metal hydroxides are neutral)Basic (as metal hydroxides are basic)Question 3 of 14 Loading... 4. Write the word equation to represent the reaction between nitric acid and copper carbonatenitric acid + copper carbonate → copper dinitrate + carbon dioxide + hydrogennitric acid + copper carbonate → copper dinitrate + carbon dioxide nitric acid + copper carbonate → copper nitrate + carbon dioxide + waternitric acid + copper carbonate → copper nitrate + carbon dioxide + hydrogenQuestion 4 of 14 Loading... 5. How can metal carbonates be used to produce carbon dioxide?Themal Decomposition: when metal carbonates are heated, they break down releasing carbon dioxide. Alternatively, the carbonate can be added to an acid.Reacting with more metal leaves the metal oxide, releasing carbon dioxideReacting with acid releases carbon dioxideBurning them in air releases carbon dioxideQuestion 5 of 14 Loading... 6. What is the pH of a weak alkali?0-34-78-1012-14Question 6 of 14 Loading... 7. What is the formula for lithium nitride?LiNO₃Li(NO₃)₃LiN₃Li₃NQuestion 7 of 14 Loading... 8. Balance the following equation: WO₃ + H₂ → W + H₂O 2WO₃ + 3H₂ → 2W + 6H₂O WO₃ + 3H₂ → W + 3H₂O WO₃ + 3H₂ → W + 6H₂O WO₃ + 6H₂ → W + 3H₂OQuestion 8 of 14 Loading... 9. State the formula for the lead (II) ionPb²⁻Pb³⁻Pb²⁺Pb³⁺Question 9 of 14 Loading... 10. What observation is made when carbon burns in air?Green flameBlue flameRed flameYellow flameQuestion 10 of 14 Loading... 11. Are non-metal oxides acidic or basic?NeutralDepends on conditionsAcidicBasicQuestion 11 of 14 Loading... 12. State the colour of phenolphthalein in acidic and alkaline solutionsacidic = red alkali = blueacidic = blue alkali = red acidic = colourless alkali = pinkacidic = pink alkali = colourless Question 12 of 14 Loading... 13. What is the universal indicator colour of a pH 0-3 solution?GreenYellowRedPurpleQuestion 13 of 14 Loading... 14. What is an alkali?An alkali is a source of hydroxide ions, OH⁻An alkali is a compound that reacts with metalsAn alkali is a colourless solutionAn alkali is a corrosive substanceQuestion 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