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Chemistry
Chemistry
Problem
The reaction
2
Mg
(
s
)
+
O
2
(
g
)
→
2
MgO
(
s
)
2\,\text{Mg}(s)+\text{O}_2(g)\rightarrow 2\,\text{MgO}(s)
2
Mg
(
s
)
+
O
2
(
g
)
→
2
MgO
(
s
)
occurs when a strip of magnesium is burned in air. Explain whether this reaction represents a chemical change or a physical change, citing evidence from the equation to support your answer.
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