A small piece of sodium is dropped into a beaker containing water. Which of the following observations is incorrect? (A) It floats on the surface of water to form a silvery ball. (B) It darts over the surface of water and decreases in size. (C) It catches fire and burns with a golden-yellow flame. (D) The water on testing turns blue litmus to red.
Answers
Answer:
(c) - it catches fire and burns with a golden yellow flame.
Explanation:
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(A) It floats on the surface of water to form a silvery ball.
(B) It darts over the surface of water and decreases in size
(D) The water on testing turns blue litmus to red.
Are the incorrect observations.
Sodium is a particularly reactive element that belongs to the periodic table's alkali metal group (group one). It has a very violent and exothermic reaction with water, generating a lot of heat. When introduced to water, it fizzes about for a while before darting around at a high rate in the container containing the water. We'll hear a hissing sound and see a large cloud of gas emerge from the container in a few seconds. The breaking of water molecules owing to the tremendous reactivity of sodium produces this gas, which is actually hydrogen.