Key Reactions quiz Loading... 1. Describe the test for carbon dioxide gasTurns moist litmus paper white (bleaches)Turns damp red litmus paper blueBubble the gas through limewater and see if it goes cloudyRelights a glowing splintQuestion 1 of 14 Loading... 2. Write the word and chemical equation for the thermal decompostion of calcium carbonate, CaCO₃calcium carbonate → calcium + carbon dioxide 2CaCO₃ → Ca + 2CO₂calcium carbonate → calcium dioxide + carbon monoxide CaCO₃ → CaO₂ + COcalcium carbonate → calcium + carbon monoxide 2CaCO₃ → 2Ca + 3COcalcium carbonate → calcium oxide + carbon dioxide CaCO₃ → CaO + CO₂Question 2 of 14 Loading... 3. What do each of the following state symbols represent: (s), (l), (g), (aq)(s) - solid. (l) - liquid. (g) - gas. (aq) - aqueous (in solution)(s) - solid. (l) - liquid. (g) - gas. (aq) - water(l) - solid. (g) - liquid. (s) - gas. (aq) - aqueous (in solution)(s) - solution. (l) - liquid. (g) - gas. (aq) - waterQuestion 3 of 14 Loading... 4. Can a base neutralise an acid?Only if it is more reactive than hydrogenSometimesNoYesQuestion 4 of 14 Loading... 5. What is the universal indicator colour of a pH 4-6 solution?RedPurpleGreenYellowQuestion 5 of 14 Loading... 6. Write the word equation to represent the reaction between nitric acid and copper carbonatenitric acid + copper carbonate → copper nitrate + carbon dioxide + waternitric acid + copper carbonate → copper nitrate + carbon dioxide + hydrogennitric acid + copper carbonate → copper dinitrate + carbon dioxide + hydrogennitric acid + copper carbonate → copper dinitrate + carbon dioxide Question 6 of 14 Loading... 7. What is the pH of a weak alkali?8-1012-140-34-7Question 7 of 14 Loading... 8. State the formula of the zinc ionZn²⁻Zn⁻Zn²⁺Zn⁺Question 8 of 14 Loading... 9. When carbon burns in air, is the oxide acidic or basic?NeutralBasicAcidicDepends on conditionsQuestion 9 of 14 Loading... 10. Is iron (III) hydroxide acidic or basic?Depends on the conditionsAcidic (as metal hydroxides are acidic)Basic (as metal hydroxides are basic)Neutral (as metal hydroxides are neutral)Question 10 of 14 Loading... 11. What is an alkali?An alkali is a corrosive substanceAn alkali is a compound that reacts with metalsAn alkali is a colourless solutionAn alkali is a source of hydroxide ions, OH⁻Question 11 of 14 Loading... 12. If an element conducts electricity, is it typically a metal or a non-metal?Non-metalMetalDepends on conditionsEitherQuestion 12 of 14 Loading... 13. What is the formula for sodium fluoride?NaFNa₂FNa₂F₂NaF₂Question 13 of 14 Loading... 14. State the colour of methyl orange in acidic and alkaline solutionsacidic = yellow alkali = redacidic = red alkali = yellowacidic = red alkali = orangeacidic = orange alkali = yellowQuestion 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! FacebookTwitterRedditLinkedInTumblrPinterestVkEmail