The object that goes through chemical change, changes completely to where you can not change it back to its original form. Physical change you can undo
Answer:
When magnesium reacts with oxygen, it produces light bright enough to blind you temporarily. Magnesium burns so bright because the reaction releases a lot of heat. As a result of this exothermic reaction, magnesium gives two electrons to oxygen, forming powdery magnesium oxide (MgO).
Im thinking a and d but if its just one answer im thinking mostly a
I believe that your acceleration would be 4 m/s
