When two substances go through a chemical change what happens

a, they always turn into gases

b, their physical properties remain the same

c, their molecules remain the same

d, they form a new substance with different properties

D. they find a new substance with different properties

Option"D" is correct answer to this question...

13) a 14) a15) b16) i don't know sorry17) a (maybe)

Ithink that the use of creativity in the sciences entails that one produce something out of nothing or from another thing. with this, i think that the he wrote down his results as four parts of the atomic theory is the manifestation of the  creativity of john dalton.