consider the equation:

4ai+3o2 2ai2o3

is the equation balanced? why or why not?

If it is already balanced because the compounds aluminum(Al) and oxygen(O) have the same number of atoms

unbalanced

Explanation:

Oops I'm sorry, a year late haha. Anyway this is definitely unbalanced.

So if you write this out, you could write it as 4 A, 1 I, + 3O (x2) ---> 2 A, 1 I, 2O (x3).

so 4AI+6O---> 2AI6O

On the left there is 4AI whereas the right has 2AI. They aren't equal nor balanced.

I'm not completely sure but I hope this helps :)

(oh and tell me if I'm wrong I can change my answer)

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.