Select the two models that represent molecules of substances with the same chemical formula but different arrangements of atoms.

Question

H

C

Cyclopropane,propene, 1-butene, propaneComplete the chemical formula for the two substances.
If an atomic symbol has no subscript, leave the box next to the symbol blank.
C
H

Answer 1

The two models that represent molecules of substances with the same chemical formula but different arrangements of atoms are:

1. Cyclopropane (C3H6)
2. Propene - (C3H6)

Chemical Formula Completion:

For both substances, the chemical formula is:

• C: 3
• H: 6

So, the completed chemical formula for both substances is:

• C: 3
• H: 6

This means:

• Cyclopropane: C₃H₆
• Propene: C₃H₆

Both substances have the same molecular formula (C3H6) but differ in their structural arrangements, which is a characteristic of isomers.