Cell Work Unit Test Cell Work Unit Test
Item
Which statement about chemical reactions is correct? (1 point)
Item
The number of substances before the chemical reaction always equals the number of substances
after the chemical reaction.
Item
Item 4
The number of molecules before the chemical reaction always equals the number of molecules
after the chemical reaction.
Item 5
Item 6
The number of atoms before the chemical reaction always equals the number of atoms after the
chemical reaction.
The number of energy bonds before the chemical reaction always equals the number of energy
bonds after the chemical reaction.