Answer: C. no new substances
are formed<span>
</span><span>
<span>In the
physical change of matter, there is no new substance that is formed. It is only
the appearance of the matter that is being changed and not its chemical
composition. Cutting, tearing and grinding are only some of the examples that
exhibit physical change. </span></span>
To determine the empirical formula or the simplest ratio of specific atoms to other atoms in a given compound, simply divide by the largest common divisible factor of the subscripts in this case it's 3.
C3H6 -> CH2.
