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.
(a)What could metal X be?
(b) What is powder Y?
(c) With which substance metal X combines to form powder Y? (d) What is substance Z? Name one domestic use of substance Z?
(e)Write a balanced chemical equation of the reaction which takes place when metal X burns in air to form powder Y.
$$a) Metal X is Magnesium (Mg).
b) Powder Y is Magnesium oxide, (MgO).
c) The substance with which metal X (Magnesium) combines to form powder Y (Magnesium oxide) is Oxygen (O2).
d) Substance Z is Magnesium hydroxide Mg(OH)2. It is used as an antacid to relieve indigestion.
e) The balanced chemical equation is given below:
$2Mg( s) +O_{2} \ ( g) \ \rightarrow 2MgO( s)$
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