Answer:
they just add heat, then it turns to water vapor
Explanation:
The first h20 is water the arrow represents adding heat, and the second h20 represent water vapor (water as a gas)
Physical Change because a new substance was not created and if it was a chemical change, a new substance would have to be created.
I think the answer you are looking for is D.
Hope this helps!!! :D
The answer would be D because from my research it's the only one that didn't have a catalyst
Atoms are divisible contrary to the early beliefs that the smallest "indivisible" matter is an atom. When an atom loses its identity it means that they are divisible. Atoms chemically react with other kinds of atoms thus changing their activity.
They certainly are not that important to our lives, but it’s good to know :)
