What are two ways to recognize a chemical change

1. what sounds it makes like bubbling sounds, sizzling sounds, etc...

2. what happens like bubbles up, changes color, etc...

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be