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Question
Fill in the blank
The chemical reaction between hydrogen and chlorine is a ................ reaction
Solution
The chemical reaction between hydrogen and chlorine is a combinaton reaction.
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A silvery-white metal X taken in the form of ribbon, when ignited, burns in air with a dazzling white flame to form a white powder Y. When water is added to powder Y, it dissolves partially to form another substance Z.
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Fill in the blank
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