Physical or Chemical Changes?
Identify each of the following as either physical or chemical
a) Butter melts in a microwave
b) Copper feels cold to the touch
c) Apple slices turn brown in air
d) Iron nails rust
e) Bleach removes a stain from clothing
f) A watch dial glows in the dark
Answers & Comments
Verified answer
P
P
C
C
C
P
CHEMICAL. actual is what you do to somewhat paper once you rip it aside. You my have replaced its visual charm, yet you have no longer replaced the certainty that that's paper, its identity. Its chemical composition has no longer replaced. usually that's some thing like bending, breaking, cracking, splitting, etc. Chemical is once you alter the molecular shape or some thing. Baking is a chemical reaction, believe it or no longer. the place do you think of the air wallet in bread come from? gas released because of the fact of a chemical reaction. plus the cake is popping from liquid to solid.