Question

name:
date:

1. what happens when the atoms of a substance are regrouped?

a. gold becomes malleable
b. the atoms break apart and disappear
c. a new substance is formed
d. the substance stays the same

Explanation:

When atoms of a substance are regrouped, a chemical reaction occurs. In a chemical reaction, new substances are formed. Option A (gold becoming malleable) is a physical property change. Option B (atoms breaking apart and disappearing) is incorrect as atoms are conserved in chemical reactions. Option D (the substance staying the same) is wrong because regrouping implies a change. Only when a new substance is formed (Option C) does regrouping of atoms lead to a valid chemical - reaction outcome.

Answer:

C. a new substance is formed