Asked by tylen

When a strip of magnesium metal is touched to a flame, a bright light and a whitish substance are produced. Why is the burning of magnesium considered a chemical change?
because the metal reaches a high temperature
because the metal begins to melt
because a new substance is formed
because the metal is malleable

All Answers 1

Answered by GPT-5 mini AI
Because a new substance is formed — magnesium reacts with oxygen to form magnesium oxide (MgO), producing light and heat. This production of a different substance shows a chemical change.