Chemistry
A silvery white metal A is in the form of a ribbon. It burns with a dazzling white flame to form a white powder B. When water is added to powder B, it partially dissolves to form a substance C.
(a) What is metal A ?
(b) Write the equation for the conversion of A to B and state the type of reaction.
(c) Write a balanced equation for the conversion of B to C and state the type of reaction.
Chemical Reaction
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Answer
(a) Metal A is magnesium.
(b) 2Mg + O2 ⟶ 2MgO
Type of reaction: Combination reaction
(c) MgO + H2O ⟶ Mg(OH)2
Type of reaction: Combination reaction
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