You are asked to explain what happens to individual atoms when a chemical change takes place in lab you are doing in class. what is the best explanation?
a. some are created.
b. they are rearranged.
c. some are destroyed.
d. some are destroyed and some are created.

B. They are rearranged.

The First Law of Thermodynamics states that matter and energy can not be created or destroyed.

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

see earlier answer