Question

Which outcome occurs when bonds between atoms are broken or formed?

A.
a physical change


B.
an element increasing in size


C.
a chemical change


D.
a change of state

Answer 1

When two atoms are combined to form a molecule this changes their chemical structure. Atoms in a molecule breaking apart or forming new bonds also change their chemical structure.

So, when bonds between atoms are broken or formed, they undergo a chemical change.