Question

give an example of a substance undergoing a chemical change and explain why the substance cannot return to its original state
help please, thanks :)

Answer 1

Well, one easy example would be a cube of ice placed on a hot stove.

Answer 2

The heat will make the ice melt; changing it from solid state (ice) to a liquid state (water).

Answer 3

i have that already
the teacher said don't use the lab

Answer 4

the lab paper

Answer 5

UGG! :p The lab paper?! What's that& ayye that was like the easiest example ever though

Answer 6

i know the teacher took it as an example

Answer 7

>.< Ugg! otay otay...

Answer 8

do u think a match that is lit is a chemical change

Answer 9

Well...yes!!! When you rub the match stick on that box it becomes a flame

Answer 10

thank you for helping bye:)..

Answer 11

Your welcome :j