Question

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?

A. because the metal reaches a high
temperature

B. because the metal begins to melt

C. because a new substance is formed

D. because the metal is malleable

Answer 1

c

Step-by-step explanation:

Answer 2

C. Chemical changes take place when a new substance is formed from an older substance. In this case, a new substance is formed when the magnesium metal is touched to a flame and the heat transforms it into the whitish, powdery substance.