Which substance is the white powder formed when a magnesium ribbon burns in air?
Answer and explanation
Correct answer: Magnesium oxide
Magnesium reacts with oxygen in air to form white magnesium oxide. The balanced equation is \(2Mg + O_2 \rightarrow 2MgO\). This is a combination reaction because two reactants form one product. Magnesium chloride would require chlorine, which is not present in this reaction.
Frequently asked questions
What is the correct answer to this question?
Magnesium oxide
Why is this the correct answer?
Magnesium reacts with oxygen in air to form white magnesium oxide. The balanced equation is \(2Mg + O_2 \rightarrow 2MgO\). This is a combination reaction because two reactants form one product. Magnesium chloride would require chlorine, which is not present in this reaction.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
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