Chemistry
State your observation when :
(a) A gas jar which appears empty is inverted over a gas jar containing Bromine vapours.
(b) Solid ammonium chloride is heated.
(c) Vinegar is added to baking soda.
Matter
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Answer
(a) Reddish brown vapours of bromine spread out from the gas jar into the empty jar, due to diffusion.
(b) On heating, solid ammonium chloride sublimes directly changing into white vapour, without changing into its liquid state. The vapour rises and solidifies on the upper cooler part of the test tube.
(c) When vinegar is added to baking soda, a strong effervescence or fizz sound occurs indicating the formation of carbon dioxide gas.
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