Question

which 2 characteristics of chemical change do we observe when a magnesium ribbon bums​

Answer 1

Answer:

Oxygen and magnesium combine in a chemical reaction to form this compound. After it burns, it forms a white powder of the magnesium oxide. Magnesium gives up two electrons to oxygen atoms to form this powdery product. This is an exothermic reaction.

Explanation:

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Answer 2

Magnesium ribbon bums with a dazzling white light and produces a white powder which is magnesium oxide. The reaction can be represented as :-

                    2Mg+O2→2MgO (white powder)

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