Question

Magnesium is a shiny, flexible Material that can be burned in the presence of air. When it is burned, it produces a white powder that is is no longer a shiny and flexible material. This white powder also has more mass than the original magnesium.

Choose the one that best gives the best evidence that a chemical reaction occurred, explain.

A - The molecules were separated into individual atoms.
B - The mass of the magnesium changed.
C - Smoke that was trapped between the magnesium atoms was given off.
D - A new substance was formed.

Answer 1

It’s D.

Explanation
Yeah

Answer 2

D, a new substance formed

Step-by-step explanation:

if Magnesium is shiny a flexible but turns to a white powder no longer shiny or flexible when burned, it turns to a new substance