Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions. The “ingredients” of a reaction are called reactants, and the end results are called products.
Answer:
Antibiotics destroy bacteria
A.
16 16 0
N -> O + e
7 8 -1
B.
40 40 0
K -> Ca + e
19 20 -1
I have the same question atm, but I'm pretty sure this is the answer.
I'm pretty sure we're combining these together to get a reactant, so if this is one of your answer choices chose 2Fe2O3, reason is when we add 4Fe + 3O2, we get the same answer, but in a different form.
