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Chemical Reactions and Equations
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01/09/2021 8:07 pm
Topic starter
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.
1 Answer
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01/09/2021 8:08 pm
(a) Magnesium, Mg.
(b) Magnesium oxide, MgO
(c) Oxygen (of air),O2
(d) Magnesium hydroxide, Mg(OH)2; Used as antacid to relieve indigestion
(e) 2Mg + O2 → 2MgO