Water being boiled, because for a chemical change to occur there needs to be at least one new substance formed.
Answer:
Tornados could be possible or storms
Explanation:
The answer would be gold because gold is having a property of malleable
so it can be drawn into thin sheets
<span>2KNO3(s) ----> 2KNO2(s)+_O2(g)
K - 2 K - 2
N - 2 N - 2
O - 6 O - 2*2 +2 = 6</span>