Question

examine the image and assess the relationship of the atoms shown by:
ch₄ + 2o₂ ⟶ co₂ + 2h₂o
a the rearrangement of atoms is a chemical change.
b stability of the atoms in the molecule means a physical change.
c a change in state of matter from a liquid to gas is a physical change.
d a change in state of matter from solid to liquid is a physical change.

Explanation:

The given reaction is \( \ce{CH4 + 2O2 -> CO2 + 2H2O} \), which is a chemical reaction (combustion of methane). In a chemical reaction, atoms are rearranged to form new substances. Option A states that the rearrangement of atoms is a chemical change, which matches the nature of this reaction. Options B, C, and D are about physical changes (stability in molecules, state changes) which are not related to the atom - rearrangement in this chemical reaction.

Answer:

A. The rearrangement of atoms is a chemical change.