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      reactions of metals on QuizRevolution

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      reactions of metals
      Question
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      reactions of metals
      Points for Question
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      Hi Score
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      Why is the sodium metal in the video stored under oil
      Wrong
       of players answered correctly.
      • to preserve it

      • to keep it soft

      • it reacts with air and moisture

      • to stop it sticking together

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      Comments:
      1. Why is the sodium metal in the video stored under oil
        1. to preserve it
        2. to keep it soft
        3. it reacts with air and moisture
        4. to stop it sticking together
      2. What is the gas given off as the sodium dissolves in water
        1. carbon dioxide
        2. hydrogen
        3. oxygen
        4. carbon monoxide
      3. Phenolphthalein turns pink when sodium dissolves in water. The base in solution is
        1. sodium hydroxide
        2. sodium chloride
        3. calcium hydroxide
        4. zinc carbonate
      4. Calcium dissolves in water. A gas is given off that pops when lit. What is the gas
        1. oxygen
        2. carbon dioxide
        3. nitrogen
        4. hydrogen
      5. Zinc dissolves in acids. What is the salt formed when zinc reacts with sulphuric acid
        1. Zinc chloride
        2. copper sulphate
        3. zinc sulphate
        4. copper chloride
      6. The acid in the test tube is hydrochloric with magnesium. The correct word equation is
        1. magnesium +hydrochloric acid-->magnesium nitrate + hydrogen
        2. magnesium+sulphuric acid-->magnesium sulphate + hydrogen
        3. magnesium + nitric acid-->magnesium chloride + hydrogen
        4. magnesium + hydrochloric acid -->magnesium chloride+hydrogen
      7. what is the best explanation for the changes that occur to magnesium atoms burning in air
        1. magnesium atoms lose electrons to form positive ions
        2. magnesium burns to leave a white powder
        3. magnesium burns in air to form magnesium oxide
        4. A great deal of heat is produced during the reaction
      8. Sodium and chlorine reacy violently. Chose the best explanation :-
        1. sodium atoms gain an electron to form a positive ion
        2. chlorine atoms lose an electron to form a positive ion
        3. sodium and chlorine react to form sodium chloride or salt
        4. sodium and chlorine form ions with a full outer shell
      9. iron can burst into flames in pure oxygen. The iron in iron oxide has changed chemically
        1. The iron atoms have gained electrons to form a positive ion
        2. The iron atoms have lost electrons to become negative ions
        3. The iron atoms have lost electrons to become a positive ion
        4. the iron atoms have become charged
      10. Chose the correct values of A,B,C and D to give a fully balanced equation
        1. (A)1, (B)2, (C)3 (D) 1
        2. (A)1, (B)2, (C)1, (D)1
        3. (A)2, (B)1, (C)1, (D)2
        4. (A)1, (B)1, (C)2, (D)1

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